US 12,442,085 B2
Surface-treated steel sheet
Atsuo Shimizu, Tokyo (JP); Ikumi Tokuda, Tokyo (JP); Hiromasa Shoji, Tokyo (JP); and Koji Akioka, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 18/254,958
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Jan. 6, 2022, PCT No. PCT/JP2022/000228
§ 371(c)(1), (2) Date May 30, 2023,
PCT Pub. No. WO2022/149596, PCT Pub. Date Jul. 14, 2022.
Claims priority of application No. 2021-001011 (JP), filed on Jan. 6, 2021.
Prior Publication US 2024/0044013 A1, Feb. 8, 2024
Int. Cl. C23C 28/00 (2006.01); C23C 2/06 (2006.01); C23C 2/26 (2006.01); C23C 2/40 (2006.01)
CPC C23C 28/321 (2013.01) [C23C 2/06 (2013.01); C23C 2/26 (2013.01); C23C 2/40 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A surface-treated steel sheet comprising:
a steel sheet;
a Zn-based plating layer formed on the steel sheet; and
a coating formed on the Zn-based plating layer,
wherein a Si concentration, a P concentration, a F concentration, a V concentration, a Zr concentration, a Zn concentration, and an Al concentration of the coating are, by mass %,
Si: 10.00% to 25.00%,
P: 0.01% to 5.00%,
F: 0.01% to 2.00%,
V: 0.01% to 4.00%,
Zr: 0.01% to 3.00%,
Zn: 0% to 3.00%, and
Al: 0% to 3.00%,
in a narrow spectrum of Si2p obtained by performing XPS analysis on a surface of the coating, a ratio of an integrated intensity of a peak having a local maximum value at 103.37±0.25 eV to an integrated intensity of a peak having a local maximum value at 102.26±0.25 eV is 0.04 or more and 0.25 or less.