HOT-DIP Al-Zn-Si-Mg-PLATED STEEL SHEET, SURFACE-TREATED STEEL SHEET, AND COATED STEEL SHEET

WIPO Patent Application WO/2022/091849

A1

The purpose of the present invention is to provide a hot-dip Al-Zn-Si-Mg-plated steel sheet having stably superior corrosion resistance.　In order to achieve said purpose, the present invention is a hot-dip Al-Zn-Si-Mg-plated steel sheet comprising a plating film, the hot-dip Al-Zn-Si-Mg-plated steel sheet being characterized in that the plating film has a composition containing 45-65 mass% of Al, 1.0-4.0 mass% of Si, and 1.0-10.0 mass% of Mg, the remainder comprising Zn and unavoidable impurities, and the diffraction intensity of Mg2Si and MgZn2 in the plating film according to X-ray diffraction analysis satisfying relationship (1). (1): Mg2Si (111)/MgZn2 (100) ≤ 2.0

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YOSHIDA MASAHIRO (JP)
TAIRA SHOICHIRO (JP)
OOI TOSHIHIKO (JP)
IWANO SUMIHISA (JP)
SATO YOUHEI (JP)
KANNO FUMITAKA (JP)
ANDO SATORU (JP)

PCT/JP2021/038478

May 05, 2022

October 18, 2021

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JFE STEEL CORP (JP)
JFE GALVANIZING & COATING CO LTD (JP)

C23C2/12; B32B15/08; B32B15/092; B32B15/095; C22C18/04; C22C21/10; C22C30/06; C23C2/06; C23C2/26; C23C28/00

WO2020067678A1

2020-04-02

JP6715399B1	2020-07-01
JP6715400B1	2020-07-01
JP2011514934A	2011-05-12
KR20200075778A	2020-06-26
CN105483594A	2016-04-13

SUGIMURA Kenji (JP)

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