Surface-treated steel sheet

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12187009
APP PUB NO 20230415453A1
SERIAL NO

18035988

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Abstract

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The surface-treated steel sheet includes an alloy layer containing Ni and Co. In a case where, in a cross section obtained by cutting the alloy layer in the thickness direction, a range having a width of 2000 nm and extending from the surface of the alloy layer to a depth of 100 nm is partitioned into regions each having a width of 100 nm and a depth of 100 nm, within the range the alloy layer includes a plurality of high Co concentration regions in each of which the ratio of a Co concentration to a sum of the Co concentration and a Ni concentration within the partitioned region is 0.8 or more, and a plurality of alloyed regions in each of which a ratio of the Co concentration to a sum of the Co concentration and the Ni concentration within the partitioned region is less than 0.8.

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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
Goto, Yasuto Tokyo, JP 45 55
Kawamoto, Kosuke Tokyo, JP 29 442

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