Ni-plated steel sheet and method for producing Ni-plated steel sheet
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A manufacturing method and steel plate technology, applied in the direction of structural parts, battery pack parts, electrical components, etc., can solve the problem of not being easy to use steel plates for batteries, and achieve the effect of good corrosion resistance of processed parts
Pending Publication Date: 2022-07-12
NIPPON STEEL CORP
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[0007] However, according to these technologies, it is not easy to satisfy all the various properties required for steel sheets for batteries in recent years.
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[0040] Contains: C: 0.057, Si: 0.004, Mn: 0.29, P: 0.014, S: 0.007, the remainder: iron and impurities.
example 2
[0041] (Example 2) IF steel
[0042] Contains: C: 0.004, Si: 0.01, Mn: 0.16, P: 0.013, S: 0.006, the remainder: iron and impurities.
example 3
[0043] (Example 3) IF steel
[0044] Contains: C: 0.0012, Si: less than 0.01, Mn: 0.29, P: 0.014, S: less than 0.001, the remainder: iron and impurities
[0045] In addition, when using the Ni-plated steel sheet 1 as a raw material of a battery container, the thickness of the base material steel sheet 11 can be set to, for example, 0.15 to 0.8 mm.
[0046] (Ni-based coating layer 12)
[0047] The Ni-based coating layer 12 is a layer disposed on the surface of the base material steel sheet 11 and obtained by alloying a part or all of the Ni plating layer with Fe contained in the base material steel sheet 11 . The average composition, thickness, and the like of the Ni-based coating layer 12 are not particularly limited, and can be appropriately set according to the application of the Ni-plated steel sheet 1 . In addition, the Ni-based coating layer 12 may be arranged only on one surface of the base steel sheet 11, or may be arranged on both surfaces thereof.
[0048] For exam...
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Abstract
A Ni-plated steel sheet according to one embodiment of the present invention is provided with a base material steel sheet and a Ni-based coating layer disposed on the surface of the base material steel sheet, the depth-direction distribution of the carbon concentration obtained by GDS analysis of the Ni-plated steel sheet has a peak showing a carbon concentration that is at least twice the carbon concentration in the thickness center of the base steel sheet in the vicinity of the interface between the base steel sheet and the Ni-based coating layer.
Description
technical field [0001] The present invention relates to a Ni-plated steel sheet and a method for producing the Ni-plated steel sheet. Background technique [0002] With the spread of portable electronic devices and xEVs (the collective term for EVs, hybrid vehicles, and plug-in hybrid vehicles), miniaturization and increased capacity of batteries serving as power sources for portable electronic devices and xEVs are required. In order to increase the capacity of the battery, the surface-treated steel sheet constituting the battery container is required to have a high strength capable of securing the strength of the battery even if the thickness thereof is small. On the other hand, in order to reduce the size of the battery, the surface-treated steel sheet constituting the battery container, the steel sheet used as the battery container, of course requires film adhesion, corrosion resistance of the processed part, and the like. [0003] As a steel sheet for batteries, for exa...
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