	US 11,851,764 B2
	Plated steel material
Kotaro Ishii, Tokyo (JP); Kohei Tokuda, Tokyo (JP); Yoshinari Ishida, Tokyo (JP); Yasuto Goto, Tokyo (JP); and Mamoru Saito, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 18/033,739
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Nov. 18, 2021, PCT No. PCT/JP2021/042376 § 371(c)(1), (2) Date Apr. 25, 2023, PCT Pub. No. WO2022/107837, PCT Pub. Date May 27, 2022.
Claims priority of application No. 2020-191503 (JP), filed on Nov. 18, 2020.
Prior Publication US 2023/0304136 A1, Sep. 28, 2023
Int. Cl. B32B 15/01 (2006.01); C23C 2/06 (2006.01); C22C 18/04 (2006.01); C23C 30/00 (2006.01); C23C 2/40 (2006.01); C23C 28/00 (2006.01); B32B 15/18 (2006.01); C23C 2/04 (2006.01); B32B 15/04 (2006.01); C22C 18/00 (2006.01); C23C 28/02 (2006.01)

CPC C23C 2/06 (2013.01) [B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C22C 18/00 (2013.01); C22C 18/04 (2013.01); C23C 2/04 (2013.01); C23C 2/40 (2013.01); C23C 28/025 (2013.01); C23C 28/3225 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); Y10T 428/12792 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12951 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01)]

4 Claims

1. A plated steel material comprising:

a steel material, and

a plating layer provided on the surface of the steel material,

wherein the plating layer has an average chemical composition including, in mass %,

Al: more than 4.0% and less than 15.0%,

Mg: more than 3.2% and less than 12.5%,

Sn: 0% or more and less than 3.00%,

Bi: 0% or more and less than 1.00%,

In: 0% or more and less than 1.00%,

Ca: 0% or more and less than 2.00%,

Y: 0% or more and less than 0.50%,

La: 0% or more and less than 0.50%,

Ce: 0% or more and less than 0.50%,

Sr: 0% or more and less than 0.50%,

Si: 0% or more and less than 2.50%,

B: 0% or more and less than 0.50%,

P: 0% or more and less than 0.50%

Cr: 0% or more and less than 0.25%,

Ti: 0% or more and less than 0.25%,

Ni: 0% or more and less than 1.0%,

Co: 0% or more and less than 0.25%,

V: 0% or more and less than 0.25%,

Nb: 0% or more and less than 0.25%,

Cu: 0% or more and less than 0.40%,

Mn: 0% or more and less than 0.25%,

Fe: 0% or more and less than 5.00%,

Sb: 0% or more and less than 0.5%, and

Pb: 0% or more and less than 0.5%,

with the remainder being more than 50.00% of Zn and impurities,

wherein, in mass %, when the amount of Mg is % Mg and the amount of Al is % Al, % Mg/% Al is 0.80 or more, and

wherein a metal structure in a total field of view of 25,000 μm²in a vertical cross section which is a cross section in a thickness direction of the plating layer includes 10 to 40 area % of a MgZn₂phase, 10 to 30 area % of an Al—Zn phase with a Zn content of 10% or more, 0 to 15 area % of an Al phase with a Zn content of less than 10%, and 25 area % or more of an Al/MgZn₂/Zn ternary eutectic structure.