	US 11,795,560 B2
	Hot stamped body
Akinobu Kobayashi, Tokyo (JP); Takehiro Takahashi, Tokyo (JP); and Yasuaki Kawamura, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 17/611,848
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed May 29, 2020, PCT No. PCT/JP2020/021443 § 371(c)(1), (2) Date Nov. 16, 2021, PCT Pub. No. WO2020/241864, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-102299 (JP), filed on May 31, 2019.
Prior Publication US 2022/0213609 A1, Jul. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C25D 3/56 (2006.01); C22C 18/00 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C25D 5/50 (2006.01)

CPC C25D 3/562 (2013.01) [C22C 18/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C25D 5/50 (2013.01); Y10T 428/12611 (2015.01)]

4 Claims

1. A hot stamped body comprising a steel sheet and a plating layer formed on at least one surface of the steel sheet, wherein the plating layer is comprised of a ZnO region present on a surface side of the plating layer and having an oxygen concentration of 10 mass % or more and an Ni—Fe—Zn alloy region present on a steel sheet side of the plating layer and having an oxygen concentration of less than 10 mass %, and an average concentration of a total of Fe, Mn and Si in the ZnO region is 5 mass % or more and 30 mass % or less,

wherein concentrations of Zn, O, Mn and Si in the Ni—Fe—Zn alloy region decrease from the surface side of the plating layer toward the steel sheet side.