Nickel-plated metal material

Abstract

The present invention addresses the problem of providing a nickel-plated metal material having excellent shear resistance (adhesion between a substrate and a roughened nickel layer when a load from a plurality of directions is applied to the roughened nickel layer) while providing adhesion between the plating layer and the substrate and adhesion between the plating layer and another member. [Solution] A nickel-plated metal material characterized by comprising a base material comprising a metal and a roughened nickel layer provided on at least one surface of the base material, the nickel-plated metal material being characterized in that the surface on the roughened nickel layer side of the nickel-plated metal material has a root mean square height (Rq) of 0.29 [mu] m to 0.90 [mu] m (inclusive) and a maximum height (Sz) of more than 3.5 [mu] m to 10.0 [mu] m (inclusive).

Description

Technical Field

[0001] The present disclosure relates to nickel-plated metal materials. Background Art

[0002] In recent years, among the technologies for forming plating layers on substrates such as metal plates and metal foils, it has become known that the plating layer is not only formed smoothly but also has irregularities formed on the plated surface, or the metal is attached to the substrate in granular or needle-like shapes, forming a so-called roughened plating layer.

[0003] For example, Patent Document 1 discloses a roughened nickel plated sheet with specified surface brightness and 85° glossiness of the roughened nickel layer in order to achieve excellent adhesion to other components while maintaining the adhesion of the plated layer to the substrate. Furthermore, Patent Document 2 discloses a roughened nickel plated sheet that, in addition to maintaining the adhesion of the plated layer to the substrate and to other components, also improves the resistance to liquid penetration when joined to other components.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: International Publication No. 2020 / 017655

[0007] Patent Document 2: International Publication No. 2021 / 149821 Summary of the Invention

[0008] Problems to be solved by the invention

[0009] In the roughened nickel steel plate disclosed in the above-mentioned patent document, for the adhesion of the roughened nickel layer to the base material (hereinafter also referred to as " plating adhesion") and the adhesion to other components produced by the roughened nickel layer, research has been carried out.On the other hand, in the scene of the metal plate with roughened nickel layer, it is found that: in the manufacturing line after the base material has formed the roughened nickel layer, the event of the load not envisioned in the above-mentioned patent document is given to the roughened nickel layer. That is, when the plate under the scene of the roughened nickel metal plate is continuously manufactured in industry, for example, in the continuous manufacturing process of the roughened nickel metal plate used in lamination with the molten resin etc. as other components, for the roughened nickel layer, the load from multiple directions is given. And, with regard to the plated metal plate with roughened nickel layer, there is a roughened shape with resistance (hereinafter also referred to as " shear resistance") for such a load from multiple directions, from the viewpoint of product quality, suppression of consumption of manufacturing equipment, resource and energy loss suppression, it is preferred.

[0010] The present invention has been made in view of solving the above-mentioned problems, and an object of the present invention is to provide a nickel-plated metal material including a roughened nickel layer having shear resistance against loads from multiple directions.

[0011] Means for solving problems

[0012] In order to solve the above-mentioned problems, the nickel-plated metal material of this embodiment is (1) a nickel-plated metal material, characterized in that it includes a substrate composed of metal and a roughened nickel layer provided on at least one side of the above-mentioned substrate, and the root mean square height Rq of the surface of the above-mentioned roughened nickel layer side of the above-mentioned nickel-plated metal material is greater than 0.29 μm and less than 0.90 μm, and the maximum height Sz is greater than 3.5 μm and less than 10.0 μm.

[0013] In the above (1), preferably (2) the developed area ratio Sdr of the surface on the roughened nickel layer side is 16 to 75%.

[0014] In the above (1) or (2), preferably (3) the relative load length ratio Rmr of the surface on the roughened nickel layer side is 33 to 95%.

[0015] In any one of the above (1) to (3), preferably (4) the root mean square inclination RΔq of the surface on the roughened nickel layer side is 15 to 50 degrees.

[0016] In any one of the above (1) to (4), preferably (5) the ten-point average roughness Rzjis of the surface on the roughened nickel layer side is 1.0 μm to 6.0 μm.

[0017] In any one of the above (1) to (5), it is preferred that (6) the nickel deposition amount of the above-mentioned roughened nickel layer is 3.5 g / m 2 ~19.0g / m 2 .

[0018] In any one of the above (1) to (6), preferably (7) an iron-nickel alloy layer and / or a nickel layer is provided between the substrate and the roughened nickel layer.

[0019] In the above (7), it is preferred that (8) the total amount of nickel deposited on the roughened nickel layer and the nickel layer is 4.8 g / m 2 ~32.8g / m 2 .

[0020] In the above (7), it is preferred that (9) the total amount of nickel deposited on the roughened nickel layer, the nickel layer, and the iron-nickel alloy layer is 4.5 g / m 2 ~55.1g / m 2 .

[0021] In any one of the above (1) to (9), preferably (10) the roughened nickel layer is provided on the outermost surface.

[0022] In any one of the above (1) to (9), preferably (11) a coating metal layer composed of zinc, tin, chromium or an alloy thereof is provided on the roughened nickel layer.

[0023] Effects of the Invention

[0024] According to the present invention, it is possible to provide a nickel-plated metal material including a roughened nickel layer having shear resistance even against loads from multiple directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic cross-sectional view of the nickel-plated metal material in this embodiment.

[0026] Figure 2 Schematic cross-sectional view of a nickel-plated metal material in another embodiment.

[0027] Figure 3 Schematic cross-sectional view of a nickel-plated metal material in another embodiment.

[0028] Figure 4 Schematic diagram of the apparatus used in the shear resistance test. DETAILED DESCRIPTION

[0029] First Implementation Method

[0030] Hereinafter, embodiments of the nickel-plated metal material for implementing the present invention will be described. Figure 1 This figure schematically illustrates one embodiment of a nickel-plated metal material 100 according to the present invention. The nickel-plated metal material 100 of this embodiment is used in current collectors for the positive or negative electrodes of secondary batteries, electronic devices, and the like. Furthermore, the nickel-plated metal material 100 is not limited to current collectors and electronic devices, but can also be used in battery components, components constituting electrical and electronic devices, interior components for automobiles and architectural decoration, automotive components such as gaskets, sliding components, and other components requiring a high degree of adhesion with other components (such as active materials and resins).

[0031] The nickel-plated metal material 100 of the present embodiment includes a base material 20 made of metal and a roughened nickel layer 50 provided on the base material 20 .

[0032] <Base material 20>

[0033] As the metal of the substrate 20 used in the nickel-plated metal material 100 of this embodiment, it is preferred that the metal plate be composed of a pure metal selected from one of Fe, Al and Ni, or a metal plate composed of an alloy based on one of Fe, Al and Ni. A steel plate is particularly preferred. As a steel plate, an iron-based steel plate with less than 1.0% by weight of Cr and other added metal elements is preferred. Specifically, as a carbon steel plate, it is preferred to use a low-carbon steel (carbon content 0.01 to 0.15% by weight) represented by low-carbon aluminum-killed steel, an ultra-low carbon steel with a carbon content of less than 0.01% by weight, or a non-aging ultra-low carbon steel formed by adding Ti, Nb, etc. to the ultra-low carbon steel. In particular, when the nickel-plated metal material 100 is used for battery components or electrical and electronic components, from the perspective of conductivity, a low-carbon steel plate or an ultra-low carbon steel plate is preferred. The details will be described later. A surface-treated steel plate or a galvanized steel plate having an iron-nickel diffusion layer or an iron-nickel diffusion layer and a nickel layer on the surface of the steel plate can also be applied.

[0034] The thickness of the substrate 20 used in the nickel-plated metal material 100 of the present embodiment is preferably in the range of 0.01 to 0.5 mm. When used as a collector of a battery that emphasizes volume and weight energy density, it is more preferably 0.01 to 0.3 mm, and further preferably 0.025 to 0.1 mm, from the perspective of strength and the desired battery capacity. As for the thickness of the substrate 20, it is preferred to use a thickness measurement using a cross-section observation using an optical microscope or a scanning electron microscope (SEM). In addition, as a thickness measurement before surface treatment, that is, before the formation of the roughened nickel layer 50, a thickness measurement using a micrometer or the like can be applied.

[0035] <Roughened nickel layer 50>

[0036] The roughened nickel layer 50 may be formed as follows Figure 1 Although shown as formed on one surface of the nickel-plated metal material 100, it may be formed on both surfaces, although not shown. The roughened nickel layer 50 is formed of nickel.

[0037] As for the roughened nickel layer 50, Figure 1 As shown, the roughened nickel layer 50 includes a protrusion protruding in the thickness direction of the substrate 20. The protrusion is characterized in that, in this embodiment, the root mean square height Rq, which is a surface property parameter of the roughened nickel layer 50, is 0.29 μm or greater and 0.90 μm or less. This specification enables the protrusions of the roughened nickel layer 50 to withstand loads from multiple directions.

[0038] Note that the surface texture parameters of the surface of roughened nickel layer 50 can be measured using a known laser microscope or the like in accordance with JIS B0601-2013 and ISO 25178-2:2012.

[0039] In the present embodiment, as a reason for specifying Rq, the roughened nickel layer 50 can withstand loads from multiple directions, it is considered as follows. The roughened nickel layer 50 is composed of protrusions protruding in the thickness direction of the substrate 20. If attention is paid to the protrusions one by one, when the protrusions are formed by roughened nickel plating, after the precipitation nuclei are separated and formed, the precipitation and grain growth of the granular nickel plating in the height direction, that is, in the thickness direction of the plated metal material, are prioritized compared to the growth in the horizontal direction, thereby a plurality of protrusions grow individually. On the other hand, the height and roughness of the protrusions and the size of the gaps between the protrusions are not necessarily exactly the same.

[0040] In the past, surface quality parameters considered to contribute to the strength of adhesion with other components included Sa, Ra, and Rzjis. However, parameters like Sa and Ra are averaged, and Sa and Ra alone do not correlate closely with the presence or absence of protrusions or other components. Furthermore, Rzjis is believed to correlate closely with the strength of adhesion with other components. However, if, for example, 100 protrusions are arranged horizontally, Rzjis only reflects the height of 10 protrusions at most, and does not consider height variations.

[0041] In the roughened nickel plating materials of the past, a number of protrusions (a number of cuts) of the protrusions in a plurality of protrusions grow preferentially relative to other protrusions, thereby improving Rzjis and improving the adhesion with other components. However, the so-called preferential growth becomes a state in which a large deviation is generated when comparing the heights of the protrusions one by one. As for such roughened nickel plating materials, it is recently learned that due to the industrial manufacturing scene of the nickel-plated metal material with a roughened nickel layer, or the load from multiple directions during the continuous passing of the plate in the process of overlapping other components of the above-mentioned nickel-plated metal material, deviations are generated in the height of the protrusions one by one, so the protrusions that grow preferentially become easy to bend. In order to prevent the protrusions from bending, it is effective to reduce the roughening height, but simply reducing Rzjis will make the adhesion with other components insufficient.

[0042] The inventors have conducted in-depth research on nickel-plated metal materials with plating adhesion and adhesion with other components in order to further improve shear resistance. As a result, it was found that: in a plurality of protrusions, shear resistance is improved by reducing the height difference and optimizing the gap between the protrusions. Moreover, by controlling the root mean square height Rq of the surface formed with the roughened nickel layer 50 to be greater than 0.29 μm and less than 0.90 μm, a roughened shape can be formed in which the protrusions of the protruding height are reduced, the protrusions have sufficient height one by one, and the recessed portions as the surface shape have sufficient gaps between the protrusions. As a result, it was confirmed that the improvement of shear resistance and the balance of adhesion with other components were sought, and the present invention was completed. From the viewpoint of improving shear resistance, the upper limit of the root mean square height Rq is preferably less than 0.70 μm. Furthermore, from the viewpoint of more stably improving shear resistance, the lower limit of the root mean square height Rq is preferably 0.30 μm or more, and from the viewpoint of more stably obtaining adhesion with other members, it is more preferably 0.31 μm or more.

[0043] The nickel-plated metal material in this embodiment also has the following characteristics: on the side of the roughened nickel layer 50, the maximum height Sz as a surface property parameter is greater than 3.5 μm and less than 10.0 μm. When Sz is too high, it is possible to form highly protruding protrusions. Therefore, from the perspective of improving shear resistance, the maximum height Sz is preferably less than 10.0 μm, and more preferably less than 8.0 μm. As for Sz, from the perspective of ensuring stable adhesion with other components, Sz is preferably greater than 4.0 μm, and more preferably greater than 4.3 μm. However, the maximum height Sz is a parameter that only observes the maximum value of the height. Sz alone has no correlation with the adhesion with other components and no correlation with shear resistance.

[0044] In the present embodiment, it is also preferable to further define the following surface texture parameters for roughened nickel layer 50 in order to improve shear resistance against loads from multiple directions or to achieve a balance between shear resistance and adhesion with other members.

[0045] With respect to the nickel-plated metal material in this embodiment, the surface on the side of the roughened nickel layer 50 preferably has an expanded area ratio Sdr of 16 to 75%. By making the expanded area ratio Sdr, that is, the area increase rate caused by the formation of the roughened nickel layer relative to the area of the defined area, 16% or more, the adhesion with other components can be improved. By making it 75% or less, when the roughened shape of the nickel-plated metal material is captured by the surface, the growth of preferential protrusions can be suppressed, and the shear resistance can be improved. From the viewpoint of improving the adhesion with other components, Sdr is preferably 17% or more, more preferably 18% or more, and particularly preferably 20% or more. In addition, from the viewpoint of improving the shear resistance, Sdr is more preferably 70% or less, and further preferably 65% or less.

[0046] In the nickel-plated metal material of this embodiment, the surface facing the roughened nickel layer 50 preferably has a relative load length ratio (Rmr) of 30-95%. Considering the roughened layer as divided into a root region, a core region, and a tip region in the height direction, a relative load length ratio (Rmr) of 30% or greater stabilizes the roughened shape in the core region, thereby improving shear resistance. It is speculated that by increasing the number of protrusions filling the core region and forming protrusions that are not too steep, an Rmr of 33% or greater is achieved. This not only suppresses the preferential growth of some protrusions but also creates a roughened shape that is less susceptible to bending when multi-directional loads are applied to the protrusions, thereby improving shear resistance. In particular, in this embodiment, by setting the developed area ratio (Sdr) to 16% or greater, while increasing Rmr and thus improving shear resistance, it also improves adhesion with other components. To achieve more stable shear resistance, an Rmr of 33% or greater is more preferred, 50% or greater is even more preferred, and 65% or greater is particularly preferred. There is no particular upper limit, but if Rmr is too high, there is a concern that the gap for other members to enter may become narrower, so it is preferably 95% or less.

[0047] With respect to the nickel-plated metal material in this embodiment, the surface on the side of the roughened nickel layer 50 preferably has a root mean square tilt RΔq of 15 to 50 degrees. By making the roughened shape from the protrusion when measured in a right angle direction relative to the through-plate direction, that is, the Rq reflecting the deviation of the height of the protrusion, be 0.29 μm or more and 0.90 μm or less, and making the RΔq that strongly reflects the tilt of each protrusion be 15 to 50 degrees, it is possible to form a roughened shape that is not easy to bend and has gaps that are easy for other components to enter and not easy to detach. As a result, it is possible to obtain a more preferred improvement in shear resistance and an improvement in adhesion with other components. From the viewpoint of improving adhesion with other components, the lower limit of the root mean square tilt RΔq is more preferably 20 degrees or more, and more preferably 25 degrees or more.

[0048] In the nickel-plated metal material of this embodiment, the root mean square tilt Sdq on the surface of the roughened nickel layer 50 side is preferably 0.50% or more from the perspective of improving adhesion with other components, and preferably 1.80% or less from the perspective of improving shear resistance. The root mean square tilt Sdq is the value when the surface as a whole is used to capture the tilt of the surface unevenness of the nickel-plated metal material. It can be said that the smaller the value, the more gentle the surface unevenness, and the larger the value, the steeper the surface unevenness. When Sdq is within the above range, the protrusion height is maintained, and the unevenness when captured by the surface becomes relatively gentle, so it is believed that shear resistance can be improved. In particular, in this embodiment, the shape formed by the aggregation of plating particles at the top of the protrusion has moderate rounded corners. As a result, it is believed that Sdq can be reduced to 1.80% or less, thereby improving shear resistance. It should be noted that if Sdq is too low, there is a concern that adhesion with other components may become insufficient. Therefore, it is preferably 0.50% or more, and more preferably 0.65% or more. As described above, in the nickel-plated metal material of this embodiment, from the viewpoint of improving shear resistance and adhesion with other members, the root mean square slope Sdq on the surface on the roughened nickel layer 50 side is preferably 0.50 to 1.80%.

[0049] The ten-point average roughness Rzjis of the surface on the roughened nickel layer 50 side is preferably 1.0 μm to 6.0 μm, more preferably 1.5 μm to 4.9 μm, and even more preferably 1.5 μm to 4.0 μm.

[0050] In addition, on the surface on the roughened nickel layer 50 side, the arithmetic mean height Sa is preferably 0.2 μm to 0.7 μm.

[0051] In the nickel-plated metal material 100 of this embodiment, the amount of nickel deposited in the roughened nickel layer 50 is preferably 3.5 g / m 2 from the viewpoint of improving shear resistance and ensuring adhesion with other members. 2 ~19.0g / m 2 More preferably 4.5g / m 2 ~14.5g / m 2 , more preferably 5.5g / m 2 ~13.9g / m 2 .

[0052] As a method for measuring the nickel adhesion amount of the roughened nickel layer 50 in this embodiment, for example, the method described in International Publication No. 2020 / 017655 or International Publication No. 2021 / 020338 can be appropriately adopted. That is, the total nickel content of the nickel-plated metal material 100 can be determined by measuring the total nickel content using fluorescent X-ray analysis (XRF) or the like.

[0053] The thickness of the entire nickel-plated metal material 100 in this embodiment will be described. The "thickness of the nickel-plated metal material 100" in this embodiment may also be measured by cross-sectional observation using a scanning electron microscope (SEM) or by using a micrometer.

[0054] The overall thickness of the nickel-plated metal material 100 in this embodiment is preferably in the range of 0.02 to 0.51 mm, more preferably 0.02 to 0.31 mm, and even more preferably 0.035 to 0.11 mm, from the perspectives of strength and desired battery capacity.

[0055] As described above, the nickel-plated metal material 100 in this embodiment can be a nickel-plated metal material including a roughened nickel layer having shear resistance against loads from multiple directions.

[0056] Second Implementation Method

[0057] according to Figure 2 As a second embodiment, the nickel-plated metal material 200 is described. As for the nickel-plated metal material 200 in this embodiment, Figure 2 As shown, it is different from the first embodiment described above in that it has an intermediate metal layer 40 formed between the above-mentioned substrate 20 and the above-mentioned roughened nickel layer 50. Therefore, this difference will be mainly described, and the other aspects are marked with the same figure numbers and their descriptions are omitted. It should be noted that in this second embodiment, the root mean square height Rq in the surface on the side of the roughened nickel layer is greater than 0.29μm and less than 0.90μm, and the maximum height Sz is greater than 3.5μm and less than 10.0μm. It should be noted that the nickel-plated metal material 200 of this embodiment is also suitable for collectors of positive or negative electrodes of secondary batteries, electronic related equipment, etc. In addition, it is not limited to collectors and electronic related equipment, and can also be used in battery components, components constituting electrical and electronic related equipment, interior decoration components of automobiles and architectural decorations, automotive components such as gaskets, sliding components, etc., and components that require high adhesion with other components (active materials, resins, etc.).

[0058] <Intermediate Metal Layer 40>

[0059] Examples of the intermediate metal layer 40 included in the nickel-plated metal material 200 of this embodiment include a nickel layer, a nickel alloy layer, and a layer in which nickel and other metals are laminated. Examples of the nickel alloy layer include an iron-nickel alloy layer. Examples of the layer in which nickel and other metals are laminated include a layer in which a nickel layer and an iron-nickel alloy layer are laminated.

[0060] Effects of forming the nickel layer as the intermediate metal layer 40 include improving the adhesion of the roughened nickel layer 50 to the substrate 20 and achieving more stable shear resistance.

[0061] When the intermediate metal layer 40 is composed of only a nickel layer, the total amount of nickel deposited in the nickel layer is 1.3 g / m 2 ~13.8g / m 2 , from the viewpoint of improving the adhesion to the substrate and the shear resistance to loads from multiple directions. More preferably 1.5 g / m 2 ~12g / m 2 Furthermore, from the perspective of shear resistance, 1.7 g / m 2 ~8.8g / m 2 The amount of nickel deposited in the nickel layer can be measured by X-ray fluorescence analysis (XRF) or the like.

[0062] In the case where the intermediate metal layer 40 is composed of only a nickel layer, the total amount of nickel deposited per single side of the nickel-plated metal material is preferably 4.8 g / m 2 ~32.8g / m 2 , more preferably 6.0 g / m 2 ~26.5g / m 2 , more preferably 7.2g / m 2 ~23.3g / m 2 The total deposition amount is the sum of the deposition amounts of nickel contained in each of the nickel layer and the roughened nickel layer.

[0063] The thickness of the nickel layer is preferably 0.1 μm to 1.0 μm, more preferably 0.1 μm to 0.8 μm, from the perspective of ensuring shear resistance to loads from multiple directions while reducing the overall thickness of the nickel-plated metal material 200. Furthermore, from the perspective of shear resistance, it is preferably 0.12 μm or more, and particularly preferably 0.15 μm or more.

[0064] The thickness of the nickel layer can be measured by SEM-EDX (energy dispersive X-ray spectroscopy) analysis of a cross section of the nickel-plated metal material.

[0065] In the case where the intermediate metal layer 40 is a layer composed of a nickel layer and an iron-nickel alloy layer, the stacking order is not particularly limited. For example, the iron-nickel alloy layer, the nickel layer, and the roughened nickel layer 50 can be stacked in sequence from the substrate 20. In addition, a metal layer of a type different from nickel or iron can be formed between the substrate 20 and the roughened nickel layer 50. From the perspective of improving the plating adhesion between the roughened nickel layer 50 and the substrate, it is preferably stacked in the order of the iron-nickel alloy layer, the nickel layer, and the roughened nickel layer 50.

[0066] The iron-nickel alloy layer is an alloy layer containing iron (Fe) and nickel (Ni), and is a metal layer containing an alloy composed of iron and nickel (also called "iron-nickel alloy" or "Fe-Ni alloy"). The alloy state composed of iron and nickel may be a solid solution, eutectoid / eutectic, or a compound (intermetallic compound), and these may coexist.

[0067] As far as the iron-nickel alloy layer is concerned, as long as the problem of the present invention can be solved, other metal elements and inevitable impurities may be included. For example, in the iron-nickel alloy layer, metal elements such as cobalt (Co) and molybdenum (Mo), and additive elements such as boron (B) may be included. It should be noted that the proportion of metal elements other than iron (Fe) and nickel (Ni) in the iron-nickel alloy layer is preferably 5% by weight or less, more preferably 3% by weight or less, and further preferably 1% by weight or less. The iron-nickel alloy layer can be a binary alloy consisting essentially of only iron and nickel, so the lower limit of the proportion of other metal elements except inevitable impurities is 0%.

[0068] The types and amounts of other metal elements contained can be measured by known means such as an X-ray fluorescence (XRF) measuring device and GDS (glow discharge surface analysis).

[0069] As the thickness of the iron-nickel alloy layer contained in the nickel-plated metal material 200 of the present embodiment, it is preferably 0.4 μm or more, more preferably 0.6 μm or more, and further preferably 0.7 μm or more. There is no particular restriction on the upper limit. If it becomes excessively thick, the resistance increases, so each single side is preferably 7.5 μm or less, and more preferably 6 μm or less. In particular, in the case of using a continuous steel strip as the substrate 20, that is, in the case of surface treatment of the continuous steel strip to obtain the nickel-plated metal material with an iron-nickel alloy layer of the present embodiment, from the viewpoint of avoiding unevenness in the coating adhesion control and heat treatment, it is preferably 6 μm or less, and more preferably 3.5 μm or less. For the method for measuring the thickness of the iron-nickel alloy layer, the thickness measurement of the analysis using SEM-EDX (energy dispersive X-ray spectroscopy) in the cross-section of the nickel-plated metal material can be applied. Specifically, as in the International Publication No. 2022 / 231009, a method for reading the coordinate diagram obtained using SEM-EDX can be applied.

[0070] In the case of an iron-nickel alloy layer, the amount of nickel deposited in the iron-nickel alloy layer is preferably 0.89 g / m 2 ~26.7g / m 2 More preferably, it is 1.3 to 17.8 g / m 2 The amount of nickel deposited in the iron-nickel alloy layer can be measured by X-ray fluorescence analysis (XRF) or the like.

[0071] When the intermediate metal layer 40 includes both an iron-nickel alloy layer and a nickel layer, the total amount of nickel deposited in the iron-nickel alloy layer and the nickel deposited in the nickel layer, that is, the total amount of nickel deposited in the intermediate metal layer 40, is preferably 1.0 g / m2 from the viewpoint of stable adhesion of the roughened plating layer. 2 ~36.1g / m 2 Among them, as the nickel coating weight of the nickel layer, from the perspective of stable adhesion of the roughened plating layer, 0.08 g / m 2 ~8.8g / m 2 , more preferably 0.13 g / m 2 ~7.6g / m 2 , more preferably 1.1 g / m 2 ~7.1g / m 2 .

[0072] It is illustrated that the nickel-plated metal material 200 can be obtained by, for example, comprising nickel plating, a heat treatment for obtaining an iron-nickel alloy layer, an impact nickel plating process, a base nickel plating process, and a roughening nickel plating process. The adhesion amount of the nickel of the nickel layer at this time can be controlled by the adhesion amount during the impact nickel plating process and the base nickel plating process. In addition, in the above-mentioned heat treatment process, iron cannot be diffused to the surface to form the nickel layer, and then the impact nickel plating process and the base nickel plating process can be implemented thereon. It is illustrated that the adhesion amount of the nickel in the nickel layer in the nickel-plated metal material 200 of this situation is preferably converted and obtained by the thickness observed in the cross section.

[0073] The total amount of nickel deposited per single surface of the nickel-plated metal material when including the iron-nickel alloy layer is preferably 4.5 g / m² from the viewpoint of adhesion with other components, improvement in shear resistance, and improvement in corrosion resistance. 2 ~55.1g / m 2 , more preferably 5.9 g / m 2 ~39.9g / m 2 , more preferably 8.1g / m 2 ~36.5g / m 2 The total adhesion amount is the sum of the adhesion amounts of nickel contained in each of the iron-nickel alloy layer, the nickel layer, and the roughened nickel layer.

[0074] As a method for measuring the nickel adhesion amount in this embodiment, for example, the method described in International Publication No. 2020 / 017655 or International Publication No. 2021 / 020338 can be appropriately adopted. That is, the total nickel amount of the nickel-plated metal material 200 can be determined by measuring it using fluorescent X-ray analysis (XRF) or the like.

[0075] To explain, Figure 2 In the figure, the intermediate metal layer 40 is provided on one side of the substrate 20, but the present invention is not limited thereto. Although not shown, the intermediate metal layer 40 may be provided on both sides of the substrate 20. In addition, when the intermediate metal layer 40 is provided on both sides, the thickness of the intermediate metal layer 40 on one side may be the same as that of the intermediate metal layer 40 on the other side, or may be different in thickness.

[0076] The intermediate metal layer 40 is preferably formed by plating or plating and heat treatment. Examples of plating methods include electroplating, chemical plating, hot-dip plating, and dry plating. Electroplating is particularly preferred from the perspectives of cost and film thickness control.

[0077] When the intermediate metal layer 40 is an iron-nickel alloy layer, for example, a method of forming a nickel plating layer on at least one side of the substrate 20 by electroplating or other methods, and then alloying the iron (Fe) in the substrate 20 and the nickel (Ni) in the nickel plating layer by diffusion or thermal diffusion treatment, or a method of forming an alloy layer by iron-nickel alloy plating, etc. When forming a nickel layer on the iron-nickel alloy layer, a method of forming the nickel layer by not diffusing the iron (Fe) to the surface during the thermal diffusion treatment, leaving only nickel areas, or a method of forming the nickel layer by nickel plating after the thermal diffusion treatment, or a method of forming the nickel layer by a combination of these two methods, etc. Alternatively, a surface-treated steel sheet provided with an iron-nickel alloy layer by thermal diffusion treatment can be rolled before roughening nickel plating, or rolled and heat-treated to form the roughening nickel layer. These manufacturing methods will be described in detail later.

[0078] Third Implementation Method

[0079] Secondly, according to Figure 3 , the nickel-plated metal material 300 in the third embodiment is described. As for the nickel-plated metal material 300 in the third embodiment, Figure 3As shown, the aspect of having a coating metal layer 70 on the roughened nickel layer 50 is different from the first embodiment described above. Therefore, for this difference, the main description is given, and the other aspects are marked with the same figure mark and their description is omitted. It is to be noted that in this third embodiment, the roughened nickel layer 50 and the coating metal layer 70 are also collectively referred to as "roughened layer". In this third embodiment, the surface property parameters when measured from the surface of the roughened layer are made to be the specified ranges in the first embodiment. It is to be noted that the nickel-plated metal material 300 of this embodiment is also applicable to the collector of the positive or negative electrode of secondary batteries, etc., electronic related equipment, etc. In addition, it is not limited to collectors and electronic related equipment, and can also be applied to components that require high sealing with other components (active materials, resins, etc.) in battery components, components constituting electrical and electronic related equipment, automobiles, interior decoration components of architectural decoration, automotive components such as gaskets, sliding components, etc.

[0080] <Coating Metal Layer 70>

[0081] As described above, the coating metal layer 70 is provided on the roughened nickel layer 50. Examples of metal materials constituting the coating metal layer 70 include zinc (Zn), tin (Sn), chromium (Cr), and alloys thereof. The inclusion of the coating metal layer 70 is advantageous in imparting sacrificial corrosion resistance or improved corrosion resistance to the nickel-plated metal material 300 as a whole. Furthermore, the coating metal layer 70 also contributes to improved adhesion between the roughened nickel layer 50 and the substrate 20.

[0082] When the coating metal layer 70 is zinc, the zinc adhesion amount is preferably 0.5 g / m 2 ~22.0g / m 2 When the coating metal layer 70 is chromium, the chromium deposition amount is preferably 0.05 g / m 2 ~10.0g / m 2 When the coating metal layer 70 is tin, the tin adhesion amount is preferably 0.2 g / m 2 ~20.0g / m 2 The adhesion amount of each of zinc, chromium, and tin can be measured using a known method such as X-ray fluorescence (XRF) measurement or ICP emission spectrometry.

[0083] Covering metal layer 70 of this embodiment can be formed by electroplating the corresponding metal on roughened nickel layer 50. In the third embodiment, intermediate metal layer 40 of the second embodiment is preferably provided between roughened nickel layer 50 and substrate 20.

[0084] 《Method for manufacturing nickel-plated metal materials》

[0085] The following describes a method for manufacturing the nickel-plated metal material in the above-described embodiment. The method includes a step of performing roughening nickel plating on at least one side of a substrate 20 to form a roughened nickel layer (a roughening nickel plating step). The roughening nickel plating step includes at least a first roughening nickel plating step. To improve the adhesion of the roughened nickel layer to the substrate, a second roughening nickel plating step may be included after the first roughening nickel plating step.

[0086] As the plating bath in the first roughening nickel plating step for forming the roughening nickel layer 50, nickel sulfate hexahydrate and / or nickel chloride hexahydrate are used so that their total amount is greater than 10 g / L and less than 48 g / L. Furthermore, the chloride ion concentration is preferably 5 to 90 g / L, more preferably 5 to 75 g / L, and further preferably 10 to 50 g / L. The ratio of nickel ions to ammonium ions is expressed as a weight ratio of "nickel ions / ammonium ions", which is preferably 0.05 to 0.75, more preferably 0.05 to 0.60, further preferably 0.05 to 0.50, and further preferably 0.05 to 0.30. In addition, the bath conductivity at 50°C is preferably 5.00 to 30.00 S / m, more preferably 5.00 to 20.00 S / m, and further preferably 7.00 to 20.00 S / m.

[0087] It should be noted that when the chloride ion concentration is 10 g / L or more, even if the amount of adhesion in the roughened nickel plating is small, it is easy to achieve a good roughened plating state. There is no particular limitation on the method for adjusting the chloride ion concentration of the plating bath, the ratio of nickel ions to ammonium ions, and the bath conductivity to the above ranges. For example, a method can be cited in which the plating bath contains nickel sulfate hexahydrate, nickel chloride hexahydrate, and ammonium sulfate, and their proportions are appropriately adjusted. It should be noted that with respect to the addition of ammonia to the nickel plating bath, ammonia water, ammonium chloride, etc. can be used instead of ammonium sulfate. The ammonia concentration in the plating bath is preferably 6 to 35 g / L, more preferably 10 to 35 g / L, further preferably 16 to 35 g / L, and further preferably 20 to 35 g / L. In addition, in order to control the chloride ion concentration, alkaline nickel carbonate compounds, hydrochloric acid, sodium chloride, potassium chloride, etc. can be used.

[0088] The present inventors have found that the first roughening nickel plating step can be performed by using a plating bath having a composition in which the chloride ion concentration, the ratio of nickel ions to ammonium ions, and the ammonia concentration are controlled within the above ranges as a circulating bath and at 15.0 A / dm 2 By intermittently performing the plating treatment multiple times at the above current density, a nickel-plated metal material having excellent shear resistance and good adhesion to other members can be obtained.

[0089] In this embodiment, using the bath as a circulating bath means performing electroplating while circulating the plating solution within the plating tank using a pump. Regarding liquid circulation, the pump preferably circulates liquid at a flow rate of 25 L / min or more per 1000 L of plating solution filled in the plating tank. Especially when using a tank exceeding 1000 L, liquid circulation is preferably performed such that the liquid enters the tank from the bottom and exits the tank from the top. Furthermore, it is more preferable to adjust the nickel ion concentration, ammonium ion concentration, and chloride ion concentration of the consumed plating solution to ±25% while circulating the liquid.

[0090] The so-called intermittent multiple plating treatments are to repeat the three steps of inserting the substrate or the pre-treated substrate into the plating bath, the steps of applying power and electrolysis, and the step of lifting it out of the plating bath as one cycle, and repeating this cycle at least twice.

[0091] The roughening nickel plating process in the past for example uses a plating bath in a drum type or a laboratory, and carries out the above-mentioned circulation with 1 cycle. If formed by such a manufacturing method, then in the projection forming the roughening shape, the projection of preferential growth is easily formed, and the adhesion with other components such as resin is easily improved. On the other hand, in the manufacturing method in the past, if the overall height is suppressed, the projection beyond the projection of preferential growth is excessively reduced, and the resin adhesion is significantly reduced, so the raising difficulty of shear resistance.

[0092] In order to obtain shear resistance against multi-directional loads such as during continuous sheet feeding, the inventors conducted intensive research on a roughened shape and a manufacturing method that suppresses the preferential growth of protrusions and obtains good adhesion to other components. As a result, they found that by setting the current density to 15.0 A / dm 2 The above-mentioned process, combined with the circulation of the plating solution and the multiple plating treatments, provides a roughened shape having shear resistance. The reason why such a combination provides a good roughened shape is considered to be as follows.

[0093] First, by circulating the plating solution and repeatedly inserting and lifting it into the plating solution, the plating solution is constantly supplied with a plating solution having a sufficient ion concentration on the surface of the object (substrate) to be roughened with nickel plating. Therefore, the ion concentration in the plating solution near the substrate can be made uniform, becoming an uneven state where the precipitation starting point of plating is not likely to occur, and more precipitation points can be obtained. Moreover, by making the immersion time in the plating solution multiple times, it is possible to suppress the preferential growth of a part of the protrusions, and make a large number of protrusions grow evenly. That is, when electroplating is continuously performed with one immersion, the ion concentration around the protrusion that starts to grow preferentially decreases, and the protrusions around it become difficult to grow. The protrusions that start to grow preferentially are more likely to grow preferentially. In contrast, by performing multiple plating processes, even if there are protrusions that start to grow preferentially, an environment with sufficient ion concentration required for the growth of the protrusions around it can be formed. As a result, an environment in which more protrusions are easy to grow is formed, which can suppress the height difference between the protrusions and make the roughness, number and density of the protrusions appropriate.

[0094] Furthermore, by setting the total amount of nickel sulfate hexahydrate and / or nickel chloride hexahydrate in the plating bath to 10 g / L or more and less than 48 g / L, setting the chloride ion concentration and the ratio of nickel ions to ammonium ions to the above ranges, and setting the current density to 15.0 A / dm 2 As described above, the precipitation and growth of the precipitated nickel-plated particles into layers due to excessive growth in the horizontal direction can be suppressed, and at the same time, the precipitation in the height direction for forming the protrusions and the particle growth for making the protrusions thicker can be promoted. In the previous manufacturing method, if the current density is increased, the protrusions that have grown preferentially will further preferentially grow and become excessively high, and as a result, it becomes difficult to obtain shear resistance. In contrast, in the present application, in order to make the protrusions precipitate evenly and in the height direction, in addition to the circulation of the plating solution and multiple plating treatments, it is also effective to increase the current density, preferably 15.0A / dm 2 More than 18.0A / dm 2 above.

[0095] On the other hand, if the current density is too high, the ions used for deposition may not be supplied in time, and the roughened shape may not be obtained. Therefore, it is preferably 40A / dm 2 Below, more preferably 35A / dm 2 It is to be noted that when multiple plating processes are performed, it is more preferable that the current density in each cycle be 15 A / dm 2 ~40A / dm 2 The average current density of the entire cycle is 15A / dm 2 ~40A / dm 2 More preferably, the current density in each cycle is 18A / dm2 ~35A / dm 2 The average current density of the entire cycle is 18A / dm 2 ~35A / dm 2 It is preferred that the current density be within the range of 100 to 1500 C / dm 2 Next proceed.

[0096] It should be noted that when the total amount of nickel sulfate hexahydrate and nickel hydrochloride hexahydrate in the plating bath is 48 g / L or more, the number of precipitation points increases, or grain growth becomes excessively easy, thus forming granular precipitates. In terms of the surface, even if it becomes rougher than that of conventional nickel plating, no high protrusions are formed, or the gaps are too small to achieve close adhesion with other components, or there are too many precipitation points, so the aggregates cannot grow and the protrusions are not formed, making it difficult to obtain the target roughened shape. In addition, when the amount is less than 10 g / L, there is a possibility that nickel will not precipitate due to insufficient nickel ions for nickel precipitation, and a roughened nickel layer may not be obtained.

[0097] Thus, in the first roughening nickel plating step, the plating bath of the above composition is used as a circulating bath and the coating is performed at 15.0 A / dm 2 By performing plating treatment multiple times at the above current density, a roughened nickel layer having excellent shear resistance and excellent adhesion to other members can be obtained.

[0098] An example of plating conditions is as follows.

[0099] [First Roughening Nickel Plating Conditions]

[0100] Bath composition

[0101] Nickel sulfate hexahydrate 10-45g / L, nickel chloride hexahydrate 1-40g / L, ammonium sulfate 10-130g / L

[0102] pH 4.0~8.0

[0103] Bath temperature 25~70℃

[0104] Average current density 15~40A / dm 2

[0105] Plating time 5 seconds to 100 seconds

[0106] Power: 100~1500C / dm 2

[0107] Whether there is stirring, etc.: Circulating bath

[0108] Under the above conditions, multiple plating processes can be performed using a circulating bath to adjust the average current density and electrolysis time so that the total amount of electricity reaches the above value. If the plating time is short, some parts tend to grow preferentially, while if it is too long, the growth is evenly distributed and tall protrusions tend to grow. Therefore, the preferred time is 7 to 60 seconds.

[0109] The roughened nickel layer can be obtained by only performing the first roughened nickel plating step described above. Alternatively, the roughened nickel layer can be obtained by performing a second roughened nickel plating step under the following conditions after the first roughened nickel plating step.

[0110] <Second Roughening Nickel Plating Step>

[0111] Bath composition: nickel sulfate hexahydrate 200-350g / L, nickel chloride hexahydrate 20-60g / L, boric acid 10-50g / L

[0112] pH 3.0~5.0

[0113] Bath temperature 40~70℃

[0114] Current density 5~30A / dm 2

[0115] The effects produced by the second roughening nickel plating are as follows. First, in the aggregate of protruding granular precipitates formed by the first roughening nickel plating, by promoting the growth of each plated particle, the tiny gaps between the particles inside the aggregate are filled with a crystalline structure with high affinity, thereby making the protrusion difficult to bend. Second, at the root of the protrusion, the base material and the particles at the root of the protrusion are also similarly filled or precipitated with nickel crystals covered on both sides, thereby improving the adhesion between the base material and the protrusion, making it more difficult to bend. Third, by promoting the growth of each of the above-mentioned plated particles, the side of the protrusion also undergoes particle growth, which can make the protrusion thicker and more difficult to bend. Fourth, by causing the particles at the top of the protrusion to grow, better adhesion with other components is obtained, and at the same time, it is difficult for the particles at the top to fall off when in contact with rollers, etc., and the shear resistance can also be improved.

[0116] Note that, if the roughened shape obtained in the first roughening nickel plating step achieves sufficient shear resistance and adhesion to other components, the second roughening nickel plating step is not necessarily required. In the first and second embodiments, the second roughening nickel plating step is preferably performed. Furthermore, in the third embodiment, when a coating metal layer 70 made of a metal other than nickel is formed on the roughening nickel layer, the step of forming the coating metal layer 70 may be performed after the second roughening nickel plating step, or may be performed in place of the second roughening nickel plating step.

[0117] In the case where the nickel-plated metal material consists of a base material and a roughened nickel layer (see Figure 1 ), the adhesion amount of the roughened nickel layer is preferably 3.5g / m 2 ~19.0g / m 2 More preferably 4.5g / m 2 ~14.5g / m 2 , more preferably 5.5g / m 2 ~13.9g / m 2 .

[0118] When the roughened nickel layer is formed by the first roughened nickel plating step and the second roughened nickel plating step, it is preferable to set the nickel deposition weight in the first roughened nickel plating (hereinafter also referred to as the first deposition weight) to 3.5 g / m2 from the viewpoint of ensuring adhesion with other components and improving shear resistance. 2 ~12.0g / m 2 From the perspective of improving adhesion with other components, the first adhesion amount is more preferably 4.0 g / m 2 In addition, from the perspective of suppressing the preferential growth of some protrusions and improving shear resistance, the first adhesion amount is more preferably 9.3 g / m 2 Below, more preferably 8.9g / m 2 the following.

[0119] The second roughening nickel plating step may not be performed if a sufficient effect is obtained in the first roughening nickel plating step. Therefore, the lower limit of the nickel deposition amount in the second roughening nickel plating step (hereinafter also referred to as the second deposition amount) is 0.0 g / m 2 From the perspective of ensuring stable plating adhesion and improving shear resistance, the second adhesion amount is preferably 1.0 g / m 2 More than 1.5 g / m 2 From the perspective of improving adhesion with other components, the second adhesion amount is preferably 7.0 g / m 2 Below, more preferably 5.2g / m 2 Below, more preferably 5.0g / m 2 the following.

[0120] exist Figure 2 In the method for manufacturing a nickel-plated metal material shown, when the intermediate metal layer is a nickel layer, a step of forming a nickel layer by plating nickel on the substrate 20 (hereinafter also referred to as a nickel plating step or a base nickel plating step) may also be included. An example of nickel plating conditions in the nickel plating step is shown below.

[0121] [Example of Nickel Plating Bath (Watt Bath) and Plating Conditions]

[0122] Bath composition:

[0123] Nickel sulfate hexahydrate: 200-300g / L

[0124] Nickel chloride hexahydrate: 20-60g / L

[0125] Boric acid: 10-50g / L

[0126] Bath temperature: 40~70℃

[0127] pH: 3.0~5.0

[0128] Stirring: air stirring or jet stirring

[0129] Current density: 5~30A / dm 2

[0130] In addition to the above-mentioned Watt bath, the bath composition may also include a known nickel sulfamate bath or a citric acid bath. Furthermore, known additives such as a brightener may be added to the plating bath to provide bright nickel plating or semi-bright nickel plating.

[0131] In particular, when the substrate is a metal plate composed of Al or an Al-based alloy, it is preferably subjected to a nickel plating process. In this case, it is preferably subjected to a degreasing process, a pickling process, a deashing process (desmating process) and a zinc dipping process before the nickel plating process.

[0132] In order to remove oxides and a passivation film, strike nickel plating may be performed under the following conditions before the roughening nickel plating step and before the base nickel plating step.

[0133] <Impact Nickel Plating Conditions>

[0134] Bath composition: nickel sulfate hexahydrate 100-300g / L, sulfuric acid 10-200g / L

[0135] pH: below 1.0

[0136] Bath temperature: 40~70℃

[0137] Current density: 5A / dm 2 ~100A / dm 2

[0138] Plating time: 3 to 100 seconds

[0139] Adhesion weight: 0.01g / m 2 ~0.3g / m 2

[0140] Particularly when the substrate is a pure metal selected from Ni, a metal plate other than a carbon steel plate and composed of an alloy based on one selected from Fe and Ni, or when an iron-nickel alloy layer is formed, it is preferred to undergo a nickel impact plating process.

[0141] exist Figure 2 In the method for manufacturing a nickel-plated metal material shown, when the intermediate metal layer is an iron-nickel alloy layer, an iron-nickel alloy layer forming step of forming the iron-nickel alloy layer on the substrate 20 may be included. Furthermore, after the iron-nickel alloy layer forming step, the above-mentioned roughening nickel plating step may be performed.

[0142] As for the iron-nickel alloy layer forming process, after a nickel plating layer is formed on at least one side of the steel plate serving as the substrate 20 by electroplating, a heat treatment is performed to form an iron-nickel alloy layer generated by thermal diffusion. It should be noted that in this case, as a process for forming a nickel plating layer, the above-mentioned nickel plating conditions can be applied. As a heat treatment after the nickel plating layer is formed, continuous annealing or intermittent annealing (box annealing) can be performed. As an example of the temperature and time during the continuous annealing treatment, it can be performed at 650°C to 950°C with a soaking time of 15 seconds to 150 seconds. As an example of the temperature and time during the intermittent annealing (box annealing) treatment, it can be performed at 450°C to 690°C with a soaking time of 1.5 hours to 20 hours, and a total time of the heating, soaking and cooling time of 4 hours to 80 hours. After the above-mentioned heat treatment, rolling can also be performed. In addition, it can also be heat-treated again after rolling.

[0143] The iron-nickel alloy layer as the intermediate metal layer can be formed by electroplating the alloy using an iron-nickel alloy plating bath containing iron ions and nickel ions on at least one surface of the substrate 20. Examples of plating conditions are shown below.

[0144] [An Example of Iron-Nickel Alloy Plating Bath and Plating Conditions]

[0145] Bath composition

[0146] Nickel sulfate hexahydrate: 150-250g / L

[0147] Ferric sulfate heptahydrate: 5-100g / L

[0148] Nickel chloride hexahydrate: 20-50g / L

[0149] Boric acid: 20-50g / L

[0150] Sodium citrate (or trisodium citrate) 1-15g / L

[0151] Saccharin sodium: 1-10g / L

[0152] Temperature: 25-70°C

[0153] pH: 2-4

[0154] Stirring: air stirring or jet stirring

[0155] Current density: 5~40A / dm 2

[0156] In the manufacturing method of this embodiment, the amount of nickel deposited in the intermediate metal layer formed on the substrate 20 is preferably 1.3 g / m2 per side. 2 ~36.1g / m 2 . When the adhesion exceeds 36.1g / m 2 In the case of less than 1.3 g / m, the plating workability is reduced, so the cost is greatly increased. On the other hand, when the adhesion amount is less than 1.3 g / m 2 In the case of , shape unevenness may easily occur in the subsequent roughening nickel plating step, which is not preferred.

[0157] In this embodiment, the formation of protruding protrusions of a high height can be suppressed by roughening the nickel plating conditions in the early stage. As a result, shear resistance and plating adhesion can be improved, thereby reducing the amount of nickel deposited in the intermediate metal layer.

[0158] In the case where the intermediate layer is only a nickel layer, the nickel adhesion amount of the nickel layer formed by nickel plating, or by nickel plating and impact nickel plating is preferably 1.3 g / m per single side from the viewpoint of improving shear resistance. 2 ~13.8g / m 2 , more preferably 1.5 g / m 2 ~12g / m 2 , more preferably 1.7g / m 2 ~8.8g / m 2 .

[0159] When the intermediate layer includes an iron-nickel alloy layer, the nickel adhesion amount of the nickel layer formed by nickel plating and impact nickel plating after the iron-nickel alloy layer is formed is preferably 0.08 g / m 2 ~8.8g / m 2 , more preferably 0.13 g / m 2 ~7.6g / m 2 , more preferably 1.1 g / m 2 ~7.1g / m 2 .

[0160] It is explained that, when the layer of the nickel layer and the iron-nickel alloy layer is laminated as the intermediate metal layer, the process of forming the above-mentioned nickel layer and the process of forming the iron-nickel alloy layer can be included. In this case, the nickel layer can be formed by known nickel baths such as the above-mentioned Watt bath, nickel sulfamate bath, citric acid bath, etc. In addition, with regard to the manufacturing method of the above-mentioned nickel-plated metal material, before the nickel layer is formed, the process of implementing known impact nickel plating can be provided. In addition, in the process of forming the iron-nickel alloy layer, by making the nickel part remain when utilizing the diffusion of heat treatment, the nickel layer and the iron-nickel alloy layer can be laminated.

[0161] Figure 3 The method for producing the nickel-plated metal material described above may include a step of forming a covering metal layer by performing covering metal plating on the roughened nickel layer formed by the roughening nickel plating step (covering metal plating step).

[0162] When the coating metal plating is electrogalvanizing, an example of the electrogalvanizing bath composition and plating conditions is as follows.

[0163] Zinc sulfate heptahydrate: 100-400g / L

[0164] Sodium sulfate: 10-100g / L

[0165] Bath temperature: 30~70℃

[0166] pH: 0.5~5.0

[0167] Stirring: air stirring or jet stirring

[0168] Current density: 10~60A / dm 2

[0169] Zinc adhesion: 0.5g / m 2 ~22.0g / m 2

[0170] As described above, the zinc plating bath uses sulfate as a zinc ion source. To improve the conductivity of the plating solution, a bath containing a conductive auxiliary salt such as ammonium sulfate or sulfuric acid can be appropriately added. Furthermore, known additives such as brighteners can be added to the plating bath to achieve glossy or semi-gloss zinc plating.

[0171] When the coating metal layer 70 is a chromium layer, it can be formed by chromium plating or chromate treatment. An example of chromium plating conditions is as follows.

[0172] Chromium (VI) oxide: 30-200 g / L

[0173] Sodium fluoride: 1-10 g / L

[0174] pH: below 1.0

[0175] Bath temperature: 35~65℃

[0176] Current density: 5~50A / dm 2

[0177] Chromium adhesion: 0.05~10.0g / m 2

[0178] When the coating metal plating is electrolytic tin plating, an example of the bath composition and plating conditions of electrolytic tin plating is as follows.

[0179] Stannous sulfate: 30-80g / L

[0180] Phenolsulfonic acid: 30-60g / L

[0181] Ethoxylated-α-naphthol: 2-6 g / L

[0182] Ethoxylated-α-naphtholsulfonic acid: 4-12 g / L

[0183] pH: 0.1~2.0

[0184] Bath temperature: 20~55℃

[0185] Current density: 2.5~10A / dm 2

[0186] Tin adhesion: 0.2~20.0g / m 2

[0187] In the present embodiment, the amount of zinc adhesion, the amount of chromium adhesion, and the amount of tin adhesion can be measured using a known method such as X-ray fluorescence (XRF) measurement or ICP emission spectrometry.

[0188] Implementation Example

[0189] The present invention will be described in more detail below with reference to Examples. First, the measurement methods in the Examples will be described.

[0190] [Measurement method of surface texture parameters]

[0191] As for the root mean square height Rq of the surface property parameter of the roughened nickel layer 50, it is measured as follows in accordance with JIS B0601-2013. A laser microscope (manufactured by Olympus Corporation, 3D measurement laser microscope LEXTOLS5000) is used to obtain an analytical image with a field of view of 259 μm × 258 μm under the condition of a 50x objective lens (lens name: MPLAPON50XLEXT). Secondly, for the obtained analytical image, an analytical application is used to perform noise removal and slope correction as automatic correction processing. Then, click the icon for surface roughness measurement, perform analysis, and obtain the surface property parameters. The root mean square height (Rq) is a surface property parameter based on the profile curve method obtained in accordance with JIS B0601-2013. When a cross-sectional curve is obtained in the aforementioned field of view (259 μm × 258 μm), a cross-sectional curve is obtained perpendicular to the rolling direction of the substrate (or the sheet-feeding direction in the case of a continuous sheet). Fifteen cross-sectional curves are obtained at equal intervals within the aforementioned field of view. The root mean square heights are measured 15 times in accordance with JIS B0601-2013, and the average of these is determined as the root mean square height (Rq). Note that no filtering conditions (F operation, S filter, and L filter) were set during the analysis; analysis was performed without these conditions.

[0192] In accordance with JIS B0601-2013 and ISO25178-2:2012, various surface properties parameters including maximum height Sz, developed area ratio Sdr, relative load length ratio Rmr, root mean square tilt RΔq, ten-point average roughness Rzjis, root mean square tilt Sdq, and arithmetic mean height Sa were also obtained.

[0193] [Method for measuring and evaluating the plating adhesion between the substrate and the roughened nickel layer]

[0194] First, as a reference sample, a product consisting of an adhesive tape (manufactured by Nichiban, trade name "Cellotep (registered trademark)") attached to a backing paper was prepared. The lightness L* and chromaticity a* and b* were measured using a spectrophotometer (manufactured by Konica Minolta, CM-5). The measurements were performed using the CIE 1976 L*a*b* color difference model.

[0195] Furthermore, the same adhesive tape as used in the above-mentioned reference sample was attached to the surface on which the roughened nickel layer was formed in the examples and comparative examples so as to form a range of 24 mm in width and 50 mm in length, and a peel test was performed using the attached adhesive tape according to the peel test method described in JIS H 8504. Then, the adhesive tape after the peel test was attached to the same backing paper as the above-mentioned reference sample, and the lightness L*, chromaticity a*, and b* were measured using a spectrophotometer in the same manner as above. Then, based on the previously measured lightness L*, chromaticity a*, and b* results of the reference sample and the lightness L*, chromaticity a*, and b* results of the adhesive tape after the peel test, the difference ΔE*ab was calculated (ΔE*ab = [(ΔL*) 2 +(Δa*) 2 +(Δb*) 2 ] 1 / 2 ), the adhesion of the roughened nickel layer was evaluated based on the following criteria. It should be noted that the smaller the ΔE*ab, the less the amount of peeling in the peel test, that is, the higher the residual rate of the roughened nickel layer after the peel test, which can be judged as excellent adhesion to the substrate.

[0196] ◎: ΔE*ab=less than 1

[0197] ○: ΔE*ab=1 or more and less than 10

[0198] ×: ΔE*ab=10 or more

[0199] [Resin Adhesion (Peel Test)]

[0200] As an evaluation of adhesion with other components, the adhesion with the resin was evaluated. Specifically, in order to evaluate the adhesion of the resin, a peel test was performed to obtain the peel strength. The measurement method is described below. First, a nickel-plated metal material (30 mm × 150 mm) was prepared. A polypropylene film (25 mm × 150 mm) with a thickness of 140 μm was heat-fused on the side of the roughened nickel layer using a heat sealer (TP-701-B manufactured by Tester Industries) to obtain a test piece. The temperature of the heat fusion was 156°C, the heating time was 5 seconds, and the heating pressure was 0.2 MPa. Then, a tensile device (AGS-X 5kN manufactured by Shimadzu) was used to stretch the resin film at a speed of 50 mm / min in the 180° direction relative to the substrate to obtain the peel strength. By performing a peel test in which the film was stretched in the 180° direction, it also serves as an evaluation of the load from multiple directions after bonding with the resin. The evaluation of the resin adhesion was performed based on the following benchmarks.

[0201] A: 18N / 25mm or more

[0202] B: 13N / 25mm or more and less than 18N / 25mm

[0203] C: 10N / 25mm or more and less than 13N / 25mm (failed)

[0204] D: Less than 10N / 25mm (failed)

[0205] [Scratch test (shear resistance evaluation)]

[0206] like Figure 4 As shown, a filter paper P (cotton fiber) is placed on the roughened nickel layer side of the nickel-plated metal material, and a jig J ( Figure 4 (a)), a load of 1 kg is applied from above ( Figure 4 (b)). The bottom surface of the jig J is made into a diameter of 2 cm, and the contact surface of the roughened nickel layer side and the filter paper P is made into a diameter of 2 cm. Then, the jig J is stretched 100 mm ( Figure 4 (c)). Then, the filter paper P was taken out and the amount of nickel attached to the filter paper P was measured by fluorescent X-ray. The amount of nickel attached to the contact surface of the filter paper P (g / m 2 ) satisfies the following criteria and the shear resistance is evaluated. When a coating metal layer is formed on the roughened nickel layer as a roughened layer, the total metal adhesion amount (g / m 2 Specifically, when the roughening layer is composed of a roughening nickel layer and a coating tin layer, the nickel adhesion amount (g / m 2 ) and tin adhesion (g / m 2 ) satisfies the following criteria and the shear resistance is evaluated.

[0207] A: less than 1.0g / m 2

[0208] B: 1.0g / m 2 More than and less than 2.0g / m 2

[0209] C: 2.0g / m 2 More than and less than 2.5g / m 2 (Unqualified)

[0210] D: 2.5g / m 2 Above (Unqualified)

[0211] <Example 1>

[0212] First, as the substrate 20 , a cold-rolled foil (200 μm thick) of low-carbon aluminum-killed steel having the chemical composition shown below was prepared.

[0213] C: 0.04 wt%, Mn: 0.32 wt%, Si: 0.01 wt%, P: 0.012 wt%, S: 0.014 wt%, balance: Fe and inevitable impurities

[0214] Next, the prepared substrate was electrolytically degreased and pickled by immersion in sulfuric acid, and then nickel-plated on both sides of the steel foil under the following conditions to form a nickel plating layer.

[0215] (Nickel plating conditions)

[0216] Bath composition:

[0217] Nickel sulfate hexahydrate: 250g / L

[0218] Nickel chloride hexahydrate: 45g / L

[0219] Boric acid: 30g / L

[0220] Bath temperature: 60°C

[0221] pH: 4.0~5.0

[0222] Stirring: air stirring or jet stirring

[0223] Current density: 10A / dm 2

[0224] Secondly, for the steel foil having the nickel plating layer formed as described above, continuous annealing, cold rolling, intermittent annealing (box annealing), and cold rolling were sequentially performed. Specifically, first, by continuous annealing, heat treatment was performed under the conditions of a heat treatment temperature of 700°C, a soaking time of 30 seconds, and a reducing atmosphere. Secondly, after cold rolling at a reduction rate of 65-75%, heat treatment was performed by intermittent annealing (box annealing) at a heat treatment temperature of 550°C, a soaking time of 7 hours (the total of the heating time, soaking time, and cooling time: 80 hours), and a reducing atmosphere. Furthermore, thereafter, 10-20% cold rolling was performed to obtain a surface-treated steel foil having an iron-nickel alloy layer on both sides. The thickness of the surface-treated steel foil was 60μm. The thickness of the iron-nickel alloy layer was confirmed by GDS, and the result was 3.1μm. The amount of nickel deposited on the surface of the surface-treated steel foil having the iron-nickel alloy layer was measured using a fluorescent X-ray apparatus (apparatus name: ZSX100e manufactured by Rigaku Corporation) and the result was 13.5 g / m 2 . It should be noted that the specific method for measuring the amount of nickel adhesion using a fluorescent X-ray device is the same as the method described in International Publication No. 2020 / 017655, so the detailed description is omitted here.

[0225] On the surface of the surface treated steel foil, a nickel layer (hereinafter referred to as the base nickel layer) was formed between the iron-nickel alloy layer and the roughened nickel layer under the following base nickel plating conditions, with an adhesion amount of 3.9 g / m 2 The base nickel layer is formed in the manner of plating. It is to be noted that the base nickel layer is applied with a deposition amount of 0.1 g / m 2 Impact nickel plating. The base nickel layer is formed on both sides.

[0226] <Base Nickel Plating Conditions>

[0227] Bath composition: nickel sulfate hexahydrate 250g / L, nickel chloride hexahydrate 45g / L, boric acid 30g / L

[0228] pH 4.0~5.0

[0229] Bath temperature 60℃

[0230] Current density 10A / dm 2

[0231] Next, a “roughened nickel layer” was formed on the underlying nickel layer on one side under the following conditions. The roughened nickel layer was formed by performing the following first and second roughened nickel plating processes.

[0232] <First Roughening Nickel Plating Conditions>

[0233] Nickel sulfate hexahydrate concentration in the plating bath: 10 g / L

[0234] Nickel chloride hexahydrate concentration in the plating bath: 10 g / L

[0235] Chloride ion concentration of plating bath: 16.2g / L

[0236] The ratio of nickel ions to ammonium ions in the plating bath: nickel ions / ammonium ions (weight ratio) = 0.23

[0237] pH: 6.0

[0238] Bath temperature: 50°C

[0239] Average current density: 22A / dm 2

[0240] Electrolysis time: 13.0 seconds

[0241] Under the above conditions, the operation of inserting the tube into the plating bath, applying power, and pulling the tube out of the plating bath was repeated four times in sequence to carry out the plating treatment.

[0242] <Second Roughening Nickel Plating Conditions>

[0243] Bath composition: nickel sulfate hexahydrate 250g / L, nickel chloride hexahydrate 45g / L, boric acid 30g / L

[0244] pH: 4.0~5.0

[0245] Bath temperature: 50°C

[0246] Current density: 10A / dm 2

[0247] Adhesion weight: 2.1g / m 2

[0248] The values of Rq and Sz of the outermost surface of the roughened nickel layer formed by the nickel-plated metal material are shown in Table 1. In addition, the values of each surface property parameter are shown in Table 1. The surface property parameter is measured under the condition of 50 times of the objective lens of OLS5000 using a laser microscope (Olympus Corporation system, 3D measurement laser microscope LEXT OLS5000). The amount of nickel attached to the filter paper in the adhesion, resin adhesion and scratch test of the substrate and the roughened nickel layer is also measured. Each measurement result or the evaluation result based on the measurement result is shown in Table 1.

[0249] <Example 2>

[0250] As shown in Table 2, the same procedure as in Example 1 was carried out except that the adhesion amounts of the roughened nickel layers obtained by the first roughened nickel plating and the second roughened nickel plating were different. The results are shown in Tables 1 and 2.

[0251] <Example 3>

[0252] As shown in Table 2, the same procedure as in Example 1 was followed except that the average current density and electrolysis time in the first roughening nickel plating and the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel platings were different. The results are shown in Tables 1 and 2.

[0253] <Example 4>

[0254] As shown in Table 2, the same procedure as in Example 1 was followed except that the number of bath insertions, average current density, and electrolysis time in the first roughening nickel plating, as well as the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating, were different. The results are shown in Tables 1 and 2.

[0255] <Example 5>

[0256] As shown in Table 2, the same procedure as in Example 1 was followed except that the average current density and electrolysis time in the first roughening nickel plating and the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel platings were different. The results are shown in Tables 1 and 2.

[0257] <Example 6>

[0258] As shown in Table 2, the same procedure as in Example 1 was followed except that the number of bath insertions, average current density, and electrolysis time in the first roughening nickel plating, as well as the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating, were different. The results are shown in Tables 1 and 2.

[0259] <Example 7>

[0260] As shown in Table 2, the same procedure as in Example 1 was performed except that the adhesion amounts of the roughening nickel layers obtained by the first roughening nickel plating and the second roughening nickel plating were different. The results are shown in Tables 1 and 2.

[0261] <Example 8>

[0262] As shown in Table 2, the same procedure as in Example 1 was followed except that the number of bath insertions, average current density, and electrolysis time in the first roughening nickel plating, as well as the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating, were different. The results are shown in Tables 1 and 2.

[0263] <Example 9>

[0264] As shown in Table 2, the same procedure as in Example 1 was followed except that the number of bath insertions, average current density, and electrolysis time in the first roughening nickel plating, as well as the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating, were different. The results are shown in Tables 1 and 2.

[0265] <Example 10>

[0266] As shown in Table 2, the same procedure as in Example 1 was followed, except that the number of bath insertions, average current density, and electrolysis time during the first roughening nickel plating process, as well as the amount of roughening nickel layer deposited by the first roughening nickel plating process, were different. The second roughening nickel plating process was not performed. The results are shown in Tables 1 and 2.

[0267] <Example 11>

[0268] As shown in Table 2, the same procedure as in Example 1 was followed except that the average current density and electrolysis time in the first roughening nickel plating, and the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating were different. The results are shown in Tables 1 and 2.

[0269] <Example 12>

[0270] As shown in Table 2, the same procedure as in Example 1 was followed except that the average current density and electrolysis time in the first roughening nickel plating, and the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating were different. The results are shown in Tables 1 and 2.

[0271] <Comparative Example 1>

[0272] As shown in Table 2, the same procedure as in Example 1 was followed except that the number of bath insertions, average current density, and electrolysis time in the first roughening nickel plating, as well as the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating, were different. The results are shown in Tables 1 and 2.

[0273] Comparative Example 2

[0274] As shown in Table 2, the same procedure as in Example 1 was followed except that the number of bath insertions, average current density, and electrolysis time in the first roughening nickel plating, as well as the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating, were different. The results are shown in Tables 1 and 2.

[0275] Comparative Example 3

[0276] As shown in Table 2, the same procedure as in Example 1 was followed except that the number of bath insertions, average current density, and electrolysis time in the first roughening nickel plating, as well as the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating, were different. The results are shown in Tables 1 and 2.

[0277] <Comparative Example 4>

[0278] As shown in Table 2, the same procedure as in Example 1 was followed except that the number of bath insertions, average current density, and electrolysis time in the first roughening nickel plating, as well as the adhesion amounts of the roughening nickel layers obtained by the first and second roughening nickel plating, were different. The results are shown in Tables 1 and 2.

[0279] <Comparative Example 5>

[0280] As the substrate 20, a cold-rolled foil of low-carbon aluminum-killed steel with a thickness of 60 μm was prepared. For the substrate 20, unlike Example 1, no treatment before base nickel plating was performed. Specifically, for the substrate 20, nickel plating and continuous annealing, cold rolling, intermittent annealing (box annealing), cold rolling, and impact nickel plating after nickel plating were not performed. The base nickel plating conditions of Example 1 were used to form a base nickel layer with an adhesion amount shown in Table 1. Secondly, a "roughened nickel layer" was formed on the base nickel layer. At this time, the first roughened nickel plating conditions are as described below. On the other hand, the second roughened nickel plating conditions are the same as those in Example 1. The adhesion amount is as described in Table 1. Other than that, the same procedure as in Example 1 was followed. The results are shown in Tables 1 to 2.

[0281] <First Roughening Nickel Plating Conditions>

[0282] Nickel sulfate hexahydrate concentration in the plating bath: 10 g / L

[0283] Nickel chloride hexahydrate concentration in the plating bath: 10 g / L

[0284] Chloride ion concentration of plating bath: 3.0g / L

[0285] The ratio of nickel ions to ammonium ions in the plating bath: nickel ions / ammonium ions (weight ratio) = 0.17

[0286] pH: 6.0

[0287] Bath temperature: 50°C

[0288] Average current density: 15A / dm 2

[0289] Electrolysis time: 60.5 seconds

[0290] Under the above conditions, the process of inserting the tube into the plating bath, applying power, and then pulling it out of the bath is repeated once in sequence to perform the plating process. There is no circulation in the plating bath, only air agitation.

[0291] <Comparative Example 6>

[0292] The first roughening nickel plating conditions were as follows. The nickel deposition amounts of the first roughening nickel plating and the second roughening nickel plating are shown in Table 1. The same procedures as in Comparative Example 5 were followed otherwise. The results are shown in Tables 1 and 2.

[0293] <First Roughening Nickel Plating Conditions>

[0294] Nickel sulfate hexahydrate concentration in the plating bath: 20 g / L

[0295] Ammonium sulfide concentration in the plating bath: 20g / L

[0296] Chloride ion concentration of plating bath: 0g / L

[0297] The ratio of nickel ions to ammonium ions in the plating bath is: nickel ions / ammonium ions (weight ratio) = 0.84

[0298] pH: 6.2

[0299] Bath temperature: 30°C

[0300] Average current density: 10A / dm 2

[0301] Electrolysis time: 18 seconds

[0302]

[0303]

[0304] <Example 13>

[0305] As the substrate 20, a cold-rolled foil of low-carbon aluminum-killed steel with a thickness of 60 μm was prepared. For the substrate 20, unlike Example 1, no treatment before base nickel plating was performed. Specifically, for the substrate 20, nickel plating and continuous annealing, cold rolling, intermittent annealing (box annealing), cold rolling, and impact nickel plating after nickel plating were not performed. The base nickel plating conditions of Example 1 were used to form a base nickel layer with an adhesion amount shown in Table 1. Secondly, the first roughening nickel plating under the conditions shown in Table 4 was performed. Then, instead of the second roughening nickel plating in Example 1, a coating treatment was performed under the coating metal layer formation conditions shown below, and a roughening layer having a coating metal layer composed of tin (hereinafter also referred to as a coating tin layer) was formed on the roughening nickel layer on one side. The adhesion amount is shown in Table 4. Other than that, the same procedure as in Example 1 was followed.

[0306] Specifically, the roughened layer in this example was formed by the first roughening nickel plating step and the coating metal layer forming step under the conditions shown in Table 4. The coating treatment step was performed by tin plating. The results are shown in Tables 3 and 4.

[0307] <Conditions for forming the coating metal layer>

[0308] Stannous sulfate: 80g / L

[0309] Phenolsulfonic acid: 60g / L

[0310] Ethoxylated α-naphthol: 3g / L

[0311] Ethoxylated-α-naphtholsulfonic acid: 3g / L

[0312] pH: 1.0 (Adjusted with sulfuric acid.)

[0313] Bath temperature: 40°C

[0314] Current density: 5.0A / dm 2

[0315] Electrolysis time: 5.0 seconds

[0316] Through the above, a tin coating layer is obtained.

[0317] <Example 14>

[0318] The same procedure as in Example 13 was carried out except that the electrolysis time was adjusted to change the amount of tin deposited on the coating metal layer obtained in the coating treatment step. The results are shown in Tables 3 and 4.

[0319] <Example 15>

[0320] The same procedure as in Example 13 was followed except that the electrolysis time was adjusted to change the nickel deposition amount of the roughened nickel layer obtained by the first roughened nickel plating and the tin deposition amount of the coating metal layer obtained by the coating treatment step. The results are shown in Tables 3 and 4.

[0321] <Comparative Example 7>

[0322] The same procedure as in Example 13 was followed except that the electrolysis time was adjusted to change the nickel deposition amount of the roughened nickel layer obtained by the first roughened nickel plating and the tin deposition amount of the coating metal layer obtained by the coating treatment step. The results are shown in Tables 3 and 4.

[0323]

[0324]

[0325] The resin adhesion (peel test) of Examples 1 to 15 was 13 N / 25 mm or more, and the adhesion amount in the shear resistance evaluation by the scratch test was less than 2.0 g / m 2 , confirming that they possessed favorable properties in terms of not only plating adhesion but also adhesion to other components and shear resistance. On the other hand, in Comparative Examples 1 to 3, 5, and 7, Rq fell outside the specified range, and from the perspective of shear resistance, the intended purpose was not achieved. In Comparative Examples 4 and 6, either Rq or Sz fell outside the range, and from the perspective of adhesion to other components, the intended purpose was not achieved.

[0326] Industrial applicability

[0327] The above-mentioned embodiments and examples are capable of various modifications without departing from the scope of the present invention. The nickel-plated metal material disclosed herein is not limited to secondary battery collectors, but can be preferably used in battery components, components constituting electrical and electronic related equipment, interior decorative components for automobiles and architectural decoration, automotive components such as gaskets, sliding components, etc., and components requiring high adhesion with other components (active materials, resins, etc.).

[0328] Description of Reference Signs

[0329] 100, 200, 300: nickel-plated metal material

[0330] 20: Base material

[0331] 40: Middle metal layer

[0332] 50: Roughened nickel layer

[0333] 70: Metal coating

Claims

1. Nickel-plated metal material, which is a nickel-plated metal material, characterized in that Include: A base material composed of metal, and A roughened nickel layer is provided on at least one side of the substrate, The surface of the nickel-plated metal material on the roughened nickel layer side has a root mean square height Rq of 0.29 μm to 0.90 μm, and a maximum height Sz of greater than 3.5 μm to 10.0 μm.

2. The nickel-plated metal material according to claim 1, wherein The developed area ratio Sdr of the surface on the roughened nickel layer side is 16 to 75%.

3. The nickel-plated metal material according to claim 1 or 2, wherein: The relative load length ratio Rmr of the surface on the roughened nickel layer side is 33 to 95%.

4. The nickel-plated metal material according to claim 1 or 2, wherein: The root mean square inclination RΔq of the surface on the roughened nickel layer side is 15 to 50 degrees.

5. The nickel-plated metal material according to claim 1 or 2, wherein: The ten-point average roughness Rzjis of the surface on the roughened nickel layer side is 1.0 μm to 6.0 μm.

6. The nickel-plated metal material according to claim 1 or 2, wherein: The nickel adhesion of the roughened nickel layer is 3.5 g / m 2 ~19.0g / m 2 .

7. The nickel-plated metal material according to claim 1 or 2, wherein: An iron-nickel alloy layer and / or a nickel layer is provided between the substrate and the roughened nickel layer.

8. The nickel-plated metal material according to claim 7, wherein The total nickel deposition amount of the roughened nickel layer and the nickel layer is 4.8 g / m 2 ~32.8g / m 2 .

9. The nickel-plated metal material according to claim 7, wherein: The total nickel deposition amount of the roughened nickel layer, the nickel layer, and the iron-nickel alloy layer is 4.5 g / m 2 ~55.1g / m 2 .

10. The nickel-plated metal material according to claim 1 or 2, wherein The roughened nickel layer is disposed on the outermost surface.

11. The nickel-plated metal material according to claim 1 or 2, wherein: A covering metal layer made of zinc, tin, chromium or an alloy thereof is provided on the roughened nickel layer.

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