Surface-treated steel sheet

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United States of America

PATENT NO 12252802
APP PUB NO 20230407509A1
SERIAL NO

18036877

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Abstract

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A surface-treated steel sheet of the present disclosure includes a steel sheet, and an alloy layer containing Ni and Co on a surface of the steel sheet. A surface roughness Ra1 of the surface of the alloy layer over a sampling length of 5.0 mm in the width direction of the steel sheet is 2.0 μm or less. Ra2 that denotes the arithmetic mean height of a roughness curve of the surface of the alloy layer over a sampling length of 10 μm in the width direction of the steel sheet is 20 nm or less, and RSm that denotes the mean length of roughness curve elements over the sampling length of 10 μm in the width direction of the steel sheet is 700 nm or more, Ra2 and RSm being measured using an atomic force microscope.

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Patent Owner(s)

  • 501 NIPPON STEEL CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dairokuno, Yuta Tokyo, JP 5 3
Goto, Yasuto Tokyo, JP 45 55
Kawamoto, Kosuke Tokyo, JP 29 442
Shimada, Koki Tokyo, JP 53 124

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