公开(公告)号：US20230193425A1

公开(公告)日：2023-06-22

申请号：US18014466

申请日：2021-07-09

Applicant: NIPPON STEEL CORPORATION

Inventor： Kohei TOKUDA ,  Takuya MITSUNOBU ,  Mamoru SAITO ,  Yuto FUKUDA ,  Yasuto GOTO ,  Hidetoshi SHINDO ,  Fumiaki NAKAMURA ,  Koji KAWANISHI ,  Ryohei MIMURA

IPC: C22C18/04

CPC classification number: C22C18/04

Abstract: A plated steel including a plated layer on a surface of a steel, in which Expression 1 of 0≤Cr+Ti+Ni+Co+V+Nb+Cu+Mn 0.25 and Expression 2 of 0≤Sr+Sb+Pb+B+Li+Zr+Mo+W+Ag+P≤0.50 are satisfied, and Expression 3 of I(MgZn2 (41.31°))/IΣ(MgZn2)≤0.265 and Expression 6 of 0.150≤{I(MgZn2 (20.79°))+I(MgZn2 (42.24°))}/IΣ(MgZn2) are further satisfied in an X-ray diffraction pattern of a surface of the plated layer measured using Cu-Kα rays under a condition that an X-ray output is 40 kV and 150 mA.

公开(公告)号：US20250109477A1

公开(公告)日：2025-04-03

申请号：US18839238

申请日：2023-02-21

Applicant: NIPPON STEEL CORPORATION

Inventor： Kohei TOKUDA ,  Mamoru SAITO ,  Yuto FUKUDA

IPC: C23C2/40 ,  C21D9/46 ,  C22C21/06 ,  C23C2/12

Abstract: A hot-dip plated steel sheet has a plating layer, in which the plating layer contains Al: more than 30.0% and 50.0% or less, Mg: more than 5.0% and 15.0% or less, Si: more than 0.5% and 1.0% or less when Al is more than 30.0% and less than 35.0%, and 0.03% or more and 1.0% or less when Al is 35.0% or more and 50.0% or less, Fe: 0% or more and 5.0% or less, and a remainder consisting of Zn and impurities, and, in an X-ray diffraction pattern of a surface of the plating layer, I1 obtained from X-ray diffraction peaks of Zn, Al, and MgZn2 is 0.10 or less and I2 obtained from an X-ray diffraction peak of Al2O5Si is 1.05 or more.

公开(公告)号：US20240336996A1

公开(公告)日：2024-10-10

申请号：US18703998

申请日：2022-08-16

Applicant: NIPPON STEEL CORPORATION

Inventor： Kohei TOKUDA ,  Mamoru SAITO ,  Yuto FUKUDA ,  Yasuto GOTO ,  Yasuhiro MAJIMA ,  Naoyuki YAMATO ,  Fumiaki NAKAMURA ,  Hidetoshi SHINDO ,  Koji KAWANISHI ,  Kenichiro MATSUMURA ,  Hiroshi TAKEBAYASHI

IPC: C22C18/04 ,  C23C30/00

CPC classification number: C22C18/04 ,  C23C30/005

Abstract: A plated steel sheet comprises a plated layer on a surface of a steel sheet, in which in the plated layer, the total amount ΣA of Sn, Bi, and In is less than 0.75%, the total amount ΣB of Ca, Y, La, and Ce is 0.03 to 0.60%, the total amount ΣC of Cr, Ti, Ni, Co, V, Nb, Cu, and Mn is 0 to 1.00%, Sn≤Si, and 20.0≤Mg/Si are satisfied, and in an X-ray diffraction pattern of a surface of the plated layer, an X-ray diffraction peak of Al2.15Zn1.85Ca, an X-ray diffraction peak of CaZn2, and an X-ray diffraction peak of η′-MgZn2 satisfy a predetermined relationship.