Hot-dipped Zn—Al—Mg-based plated steel

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United States of America Patent

PATENT NO 11939676
APP PUB NO 20230235437A1
SERIAL NO

18007650

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Abstract

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This hot-dip Zn—Al—Mg-based plated steel includes: a steel; and a plating layer formed on a surface of the steel, in which the plating layer contains, as an average composition, Mg: 1 to 10 mass %, Al: 4 to 22 mass %, and a remainder consisting of Zn and impurities, the plating layer includes an (Al—Zn mixed structure) in an area ratio of 10% to 70% in a cross section of the plating layer in a matrix of an (Al/Zn/MgZn2 ternary eutectic structure), the (Al—Zn mixed structure) includes a first region that has a Zn concentration in a range of 75 mass % or more and less than 85 mass % and a second region that is present inside the first region and has a Zn concentration in a range of 67 mass % or more and less than 75 mass %, and an area ratio of the second region in the (Al—Zn mixed structure) in the cross section of the plating layer is more than 0% and 40% or less.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATION6-1 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 1008071 ?1008071

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kohigashi, Yusuke Tokyo, JP 1 0
Mitsunobu, Takuya Tokyo, JP 51 54
Morishita, Atsushi Tokyo, JP 41 291
Toba, Tetsuya Tokyo, JP 5 3
Yamaguchi, Shinichi Tokyo, JP 185 1147

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