Composite electroplated layer
By employing a composite structure of compatible electroplating layers, main functional electroplating layers, and secondary functional electroplating layers on the product surface, the problem of internal stress caused by material differences in the electroplating layers is solved, thereby improving wear resistance and corrosion resistance.
Patent Information
- Application Number
- CN202322912515.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-30
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2033-10-30
AI Technical Summary
When existing products are electroplated with multiple layers, the thermal expansion and contraction stress caused by material differences leads to the detachment of the electroplated layer, making it difficult to simultaneously improve wear resistance, oxidation resistance, and corrosion resistance.
It adopts a composite structure of compatible electroplating layer, main functional electroplating layer and secondary functional electroplating layer. The compatible electroplating layer is used to connect different materials. The main functional electroplating layer and the secondary functional electroplating layer are nickel-tungsten alloy or nickel-phosphorus alloy and platinum electroplating layer, respectively. The thickness is controlled within a specific range to improve adhesion and wear resistance.
This method achieves good adhesion of the composite electroplating layer between different materials, improves the wear resistance and corrosion resistance of the product, and solves the internal stress problem caused by material differences.
Smart Images
Figure CN223752928U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electroplating technical field especially relates to a composite electroplating layer. BACKGROUND
[0002] At present, many products are plated with a performance layer on the surface to improve the corresponding performance of the products, such as the wear resistance of terminals, the oxidation resistance of metal shells, etc. Of course, in order to improve multiple performances, a composite electroplating layer is formed by plating multiple electroplating layers on the surface of the product. At present, most products need to improve their wear resistance and oxidation resistance and corrosion resistance, so the products generally choose to be plated with a composite electroplating layer. However, if the product is plated only with an electroplating layer having wear resistance, oxidation resistance, and corrosion resistance, the product is generally difficult to be plated. The product and the adjacent electroplating layer and the two adjacent electroplating layers will all increase in internal stress due to the difference in materials and thermal expansion and contraction at temperature changes, which may even lead to separation in severe cases. SUMMARY
[0003] The utility model aims at the shortage of prior art, provides a kind of composite electroplating layer, the composite electroplating can be plated on product conveniently, and effectively increase the wear resistance and corrosion resistance of product etc.
[0004] A composite electroplating layer comprises:
[0005] A compatible electroplating layer for electroplating on the surface of a substrate, wherein the compatible electroplating layer is one of a gold electroplating layer, a gold-palladium alloy electroplating layer, and a gold-cobalt alloy electroplating layer.
[0006] A main functional electroplating layer electroplated on the surface of the compatible electroplating layer, wherein the main functional electroplating layer comprises a nickel-tungsten alloy electroplating layer or a nickel-phosphorus alloy electroplating layer.
[0007] Further, a secondary functional electroplating layer is electroplated on the surface of the main functional electroplating layer, wherein the secondary functional electroplating layer comprises a platinum electroplating layer or a platinum alloy electroplating layer.
[0008] Preferably, the platinum alloy electroplating layer comprises a platinum-ruthenium alloy electroplating layer or a platinum-palladium alloy electroplating layer.
[0009] Further, the thickness of the main functional electroplating layer or the secondary functional electroplating layer is less than 0.5 microns.
[0010] Further, the compatible electroplating layer is arranged between the main functional electroplating layer and the secondary functional electroplating layer.
[0011] Further, the thickness of the compatible electroplating layer is 0.025-2 microns, the thickness of the main functional electroplating layer is 0.125-3 microns, and the thickness of the secondary functional electroplating layer is 0.125-3 microns.
[0012] Preferably, the thickness of the main functional electroplating layer is 0.5-1 microns; the thickness of the auxiliary functional electroplating layer is 0.25-1 microns.
[0013] The utility model discloses the beneficial effects: the utility model discloses a compatible electroplating layer is established at the bottom layer, can make main functional electroplating layer with better adhesion, also has wear resistance and anticorrosion simultaneously. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 is a structural schematic diagram of the embodiment.
[0015] Fig. 2 is a second structural schematic diagram of the embodiment.
[0016] Fig. 3 is a third structural schematic diagram of the embodiment.
[0017] The reference signs include:
[0018] 1 - substrate; 2 - compatible electroplating layer; 3 - main functional electroplating layer; 4 - auxiliary functional electroplating layer. DETAILED DESCRIPTION
[0019] The utility model will be described in detail below in combination with the drawings. As shown in Fig. 1 to Figure 3 .
[0020] Embodiment: referring to Fig. 1, a composite electroplating layer comprises: a compatible electroplating layer 2 for electroplating on the surface of a substrate 1, the compatible electroplating layer 2 being one of a gold electroplating layer, a gold-palladium alloy electroplating layer and a gold-cobalt alloy electroplating layer; a main functional electroplating layer 3 electroplated on the surface of the compatible electroplating layer 2, the main functional electroplating layer 3 comprising a nickel-tungsten alloy electroplating layer or a nickel-phosphorus alloy electroplating layer.
[0021] At present, when electroplating a nickel-tungsten alloy plating layer, direct electroplating can generally be performed on the surface of a copper substrate; other materials cannot, therefore the technical solution sets a compatible electroplating layer 2, which needs to have good extensibility and be able to easily adhere to other materials; the compatible electroplating layer 2 can be one of a gold electroplating layer, a gold-palladium alloy electroplating layer and a gold-cobalt alloy electroplating layer. Secondly, when setting the compatible electroplating layer 2, defects on the surface of the substrate 1 can be made up for, and the lower the flatness of the base surface, the greater the internal stress between the two adjacent materials. Nickel-tungsten alloy and nickel-phosphorus alloy have the characteristics of high hardness and high corrosion resistance, therefore electroplating a nickel-tungsten alloy plating layer enables the substrate 1 to have certain wear resistance and corrosion resistance.
[0022] Referring to Fig. 2, further, the surface of the main functional electroplating layer 3 is electroplated with an auxiliary functional electroplating layer 4, the auxiliary functional electroplating layer 4 comprising a platinum electroplating layer or a platinum alloy electroplating layer.
[0023] Preferably, the platinum alloy electroplated layer comprises a platinum-ruthenium alloy electroplated layer or a platinum-palladium alloy electroplated layer.
[0024] Further, the thickness of the main functional electroplated layer 3 or the auxiliary functional electroplated layer 4 is less than 0.5 microns.
[0025] In order to further improve the wear resistance and corrosion resistance of the product, the auxiliary functional electroplated layer 4 is electroplated on the surface of the main functional electroplated layer 3; since there is a certain internal stress conflict between the two, the thickness of the main functional electroplated layer 3 or the auxiliary functional electroplated layer 4 needs to be limited, which is limited to be less than 0.5 microns. Secondly, the auxiliary functional electroplated layer 4 can be a platinum electroplated layer or a platinum alloy electroplated layer. Both the platinum electroplated layer and the platinum alloy electroplated layer have certain wear resistance and corrosion resistance.
[0026] Referring to FIG. 3, further, a compatible electroplated layer 2 is arranged between the main functional electroplated layer 3 and the auxiliary functional electroplated layer 4.
[0027] The compatible electroplated layer 2 is arranged, and the thickness of the main functional electroplated layer 3 and the auxiliary functional electroplated layer 4 can be set to be relatively thick, which can effectively improve the wear resistance and corrosion resistance of the composite electroplated layer.
[0028] Further, the thickness of the compatible electroplated layer 2 is 0.025-2 microns; the thickness of the main functional electroplated layer 3 is 0.125-3 microns; and the thickness of the auxiliary functional electroplated layer 4 is 0.125-3 microns.
[0029] Preferably, the thickness of the main functional electroplated layer 3 is 0.5-1 micron; and the thickness of the auxiliary functional electroplated layer 4 is 0.25-1 micron.
[0030] The compatible electroplated layer 2 is used to connect adjacent functional electroplated layers, and thus the thickness can be slightly smaller. When the temperature difference of the use environment is large, the thickness can be appropriately increased. The thickness of the main functional electroplated layer 3 and the thickness of the auxiliary functional electroplated layer 4 can be selected according to the use environment and the number of uses.
[0031] The above is only a preferred embodiment of the utility model, and for those skilled in the art, according to the idea of the utility model, the specific implementation mode and application range can be changed, and the content of the specification should not be understood as a limitation of the utility model.
Claims
1. A composite electroplated layer, characterized by: It includes: A compatible electroplating layer for electroplating on the surface of the substrate, the compatible electroplating layer is one of gold electroplating layer, gold palladium alloy electroplating layer, gold cobalt alloy electroplating layer; The main functional electroplating layer electroplated on the surface of the compatible electroplating layer, the main functional electroplating layer includes nickel tungsten alloy electroplating layer or nickel phosphorus alloy electroplating layer; The surface of the main functional electroplating layer is electroplated with a secondary functional electroplating layer, and the secondary functional electroplating layer includes platinum electroplating layer or platinum alloy electroplating layer; The platinum alloy electroplating layer includes platinum ruthenium alloy electroplating layer or platinum palladium alloy electroplating layer; The thickness of the main functional electroplating layer or the secondary functional electroplating layer is less than 0.5 microns.
2. The composite electroplated layer according to claim 1, wherein: The main functional electroplating layer and the secondary functional electroplating layer are provided with a compatible electroplating layer.
3. The composite electroplated layer according to claim 2, wherein: The thickness of the compatible electroplating layer is 0.025-2 microns.
4. The composite electroplated layer of claim 1, wherein: The thickness of the main functional electroplating layer is 0.125-3 microns.
5. The composite electroplated layer according to claim 1, wherein: The thickness of the secondary functional electroplating layer is 0.125-3 microns.
6. The composite electroplated layer according to claim 4, wherein: The thickness of the main functional electroplating layer is 0.5-1 micron.
7. The composite electroplated layer according to claim 5, wherein: The thickness of the secondary functional electroplating layer is 0.25-1 micron.