Surface-treated steel sheet and method of producing the same

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12195868
APP PUB NO 20240035182A1
SERIAL NO

18256968

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Abstract

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It is provided a surface-treated steel sheet that can be produced without using hexavalent chromium and has excellent film wet adhesion and coating secondary adhesion as well as high film corrosion resistance and coating corrosion resistance. It is a surface-treated steel sheet having: a steel sheet; a metallic Cr layer disposed on at least one surface of the steel sheet; and a Cr oxide layer disposed on the metallic Cr layer, and the surface-treated steel sheet has a water contact angle of 50° or less and a total atomic ratio of K, Na, Mg, and Ca adsorbed on the surface to Cr of 5% or less.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATIONTOKYO 100-0011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawano, Takashi Tokyo, JP 90 559
Nakamichi, Haruo Tokyo, JP 10 56
Suzuki, Yoshitsugu Tokyo, JP 91 647
Tomozawa, Masanari Tokyo, JP 7 0
Ueno, Takashi Tokyo, JP 164 1647
Yamanaka, Yoichiro Tokyo, JP 38 175

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