US 12,460,288 B2
Plated steel sheet
Shota Hayashida, Tokyo (JP); Takuya Mitsunobu, Tokyo (JP); and Hiroshi Takebayashi, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 18/711,915
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Dec. 6, 2022, PCT No. PCT/JP2022/044893
§ 371(c)(1), (2) Date May 21, 2024,
PCT Pub. No. WO2023/135982, PCT Pub. Date Jul. 20, 2023.
Claims priority of application No. 2022-003724 (JP), filed on Jan. 13, 2022.
Prior Publication US 2025/0003047 A1, Jan. 2, 2025
Int. Cl. C23C 2/40 (2006.01); B32B 15/01 (2006.01); C22C 18/04 (2006.01); C22C 21/00 (2006.01); C22C 21/02 (2006.01); C22C 21/10 (2006.01); C22C 30/06 (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 2/28 (2006.01)
CPC C23C 2/40 (2013.01) [B32B 15/013 (2013.01); C22C 18/04 (2013.01); C22C 21/00 (2013.01); C22C 21/02 (2013.01); C22C 21/10 (2013.01); C22C 30/06 (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 2/29 (2022.08); B32B 2311/20 (2013.01); B32B 2311/30 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A plated steel sheet comprising:
a base steel sheet;
a plated layer formed on a surface of the base steel sheet; and
an oxide film formed on a surface of the plated layer,
wherein, the plated layer has a chemical composition containing, in mass %,
Sc: 0.000010 to 4.0%,
Al: 0 to 93.0%,
Fe: 0 to 15.0%,
Si: 0 to 20.0%,
Mg: 0 to 3.0%,
Ca: 0 to 3.0%,
La: 0 to 0.5%,
Ce: 0 to 0.5%,
Y: 0 to 0.5%,
Cr: 0 to 1.0%,
Ti: 0 to 1.0%,
Ni: 0 to 1.0%,
Co: 0 to 0.25%,
V: 0 to 0.25%,
Nb: 0 to 1.0%,
Cu: 0 to 1.0%,
Mn: 0 to 1.0%,
Sr: 0 to 0.5%,
Sb: 0 to 0.5%,
Pb: 0 to 0.5%,
B: 0 to 0.5%,
Li: 0 to 1.0%,
Zr: 0 to 1.0%,
Mo: 0 to 1.0%,
W: 0 to 0.5%,
Ag: 0 to 1.0%,
P: 0 to 0.5%,
Sn: 0 to 1.0%,
Bi: 0 to 1.0%,
In: 0 to 1.0%, and
a remainder: 7.0% c or more of Zn, and impurities,
a total amount of Mg, Ca, La, Ce, Y, Cr, Ti, Ni, Co, V, Nb, Cu, Mn, Sr, Sb, Pb, B, Li, Zr, Mo, W, Ag, P, Sn, Bi, and In is 0 to 5.0%,
in a cross section of the plated layer in a thickness direction, an area fraction of an intermetallic compound phase containing Sc and having an equivalent circle diameter of 5.0 μm or less is 0.1 to 10.0%, and
a thickness of the oxide film is 10 nm or more.