US 12,454,749 B2
Plated steel sheet
Takuya Mitsunobu, Tokyo (JP); Masaaki Uranaka, Tokyo (JP); Masahiro Matsuba, Tokyo (JP); and Toyomitsu Nakamura, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 18/711,221
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Jan. 26, 2023, PCT No. PCT/JP2023/002439
§ 371(c)(1), (2) Date May 17, 2024,
PCT Pub. No. WO2023/145822, PCT Pub. Date Aug. 3, 2023.
Claims priority of application No. 2022-013458 (JP), filed on Jan. 31, 2022.
Prior Publication US 2025/0003048 A1, Jan. 2, 2025
Int. Cl. B32B 15/01 (2006.01); C22C 18/00 (2006.01); C22C 18/04 (2006.01); C22C 21/02 (2006.01); C22C 21/08 (2006.01); C22C 21/10 (2006.01); C22C 30/06 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C23C 2/02 (2006.01); C23C 2/04 (2006.01); C23C 2/06 (2006.01); C23C 2/12 (2006.01); C23C 2/20 (2006.01); C23C 2/40 (2006.01); C23C 30/00 (2006.01)
CPC C23C 2/405 (2013.01) [B32B 15/012 (2013.01); B32B 15/013 (2013.01); C22C 18/00 (2013.01); C22C 18/04 (2013.01); C22C 21/02 (2013.01); C22C 21/08 (2013.01); C22C 21/10 (2013.01); C22C 30/06 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C23C 2/0222 (2022.08); C23C 2/0224 (2022.08); C23C 2/04 (2013.01); C23C 2/06 (2013.01); C23C 2/12 (2013.01); C23C 2/20 (2013.01); C23C 2/40 (2013.01); C23C 30/00 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A plated steel sheet, comprising:
a steel sheet as a base material;
a plating layer located on at least part of a surface of the steel sheet; and
an oxide layer located on a surface of the plating layer, wherein
the plating layer contains: by mass %,
Al: 1.00 to 80.00%;
Mg: 1.00 to 20.00%;
Fe: 0.01 to 15.00%;
Si: 0 to 10.00%;
Ca: 0 to 4.00%, and further selectively contains 0 to 5.000% in total of:
Sb: 0 to 0.500%;
Pb: 0 to 0.500%;
Cu: 0 to 1.000%;
Sn: 0 to 1.000%;
In: 0 to 1.000%;
Bi: 0 to 1.000%;
Ti: 0 to 1.000%;
Cr: 0 to 1.000%;
Nb: 0 to 1.000%;
Zr: 0 to 1.000%;
Ni: 0 to 1.000%;
Mn: 0 to 1.000%;
V: 0 to 1.000%;
Mo: 0 to 1.000%;
Ag: 0 to 1.000%;
Li: 0 to 1.000%;
La: 0 to 0.500%;
Ce: 0 to 0.500%;
B: 0 to 0.500%;
Y: 0 to 0.500%;
Sr: 0 to 0.500%, with the balance composed of 5.00 mass % or more Zn and impurities, and
when a position at a depth of 5 nm from an uppermost surface of the oxide layer is observed by X-ray photoelectron spectroscopy (XPS), a value of an intensity ratio ([Al—O]+[Mg—O])/[Zn—O]) calculated from intensity of peaks respectively attributed to an Al—O bond, an Mg—O bond, and a Zn—O bond is 5.0 or more.