Title:
ALUMINUM-PLATED STEEL SHEET FOR HOT STAMPING
Document Type and Number:
WIPO Patent Application WO/2024/014543
Kind Code:
A1
Abstract:
An aluminum-plated steel sheet for hot stamping according to the present invention comprises: a base material steel sheet; an aluminum plating layer that is provided on at least one surface of the base material steel sheet; and a surface treatment film that is provided on the aluminum plating layer, wherein the surface treatment film contains a needle-like compound X, of the needle-like compound X, the proportion of a needle-like compound X1 in which the ratio of the major axis thereof to the minor axis thereof is 4-50 and which has a hexagonal crystal structure is not less than 70% by number, and, of the needle-like compound X1, the proportion of a needle-like compound X2 in which a smaller one of angles at an intersection of a straight line that is parallel to the major axis thereof and a straight line that is parallel to a surface of the aluminum plating layer is 0-40 degrees is not less than 70% by number.
Inventors:
SUZUKI YUKI (JP)
FUJITA SOSHI (JP)
IRIKAWA HIDEAKI (JP)
FUJITA SOSHI (JP)
IRIKAWA HIDEAKI (JP)
Application Number:
PCT/JP2023/026113
Publication Date:
January 18, 2024
Filing Date:
July 14, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C28/00; B32B15/18; C23C2/12
Domestic Patent References:
| WO2009131233A1 | 2009-10-29 | |||
| WO2017164234A1 | 2017-09-28 | |||
| WO2012147886A1 | 2012-11-01 |
Foreign References:
| JP2004202988A | 2004-07-22 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
Download PDF: