公开(公告)号：US20250003047A1

公开(公告)日：2025-01-02

申请号：US18711915

申请日：2022-12-06

Applicant: NIPPON STEEL CORPORATION

Inventor： Shota HAYASHIDA ,  Takuya MITSUNOBU ,  Hiroshi TAKEBAYASHI

IPC: C23C2/40 ,  B32B15/01 ,  C22C18/04 ,  C22C21/00 ,  C22C21/02 ,  C22C21/10 ,  C22C30/06 ,  C22C38/04 ,  C23C2/02 ,  C23C2/04 ,  C23C2/06 ,  C23C2/12 ,  C23C2/20 ,  C23C2/28

Abstract: This plated steel sheet includes 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, the plated layer has a chemical composition containing Sc: 0.000010 to 4.0% in mass %, and has a cross section, in the thickness direction, in which the 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 the oxide film has a thickness of 10 nm or more.

公开(公告)号：US20250137098A1

公开(公告)日：2025-05-01

申请号：US18681813

申请日：2022-09-22

Applicant: NIPPON STEEL CORPORATION

Inventor： Takuya MITSUNOBU ,  Shota HAYASHIDA ,  Hiroshi TAKEBAYASHI

IPC: C22C18/04 ,  B32B15/01

Abstract: A hot stamped body, including: a steel material; and a plated layer, wherein a chemical composition of the plated layer contains, in mass %, 0 to 70% of Al, 10 to 60% of Fe, 0 to 20% of Si, and a C-group element being any one kind or two kinds of Li and Y, with a content of 0.00001 to 0.3% in total, and optionally further contains any one kind or two or more kinds of Sb, Pb, B, Cu, Ti, Cr, Nb, Ni, Mn, Mo, Ag, Co, Sn, and Bi, and a remainder being of Zn and an impurity, wherein the plated layer contains an n-Zn phase or a Zn-containing phase is used.