Title:
ALUMINUM-BASED PLATED STEEL PLATE FOR HOT PRESS HAVING EXCELLENT RESISTANCE AGAINST HYDROGEN DELAYED FRACTURE AND SPOT WELDABILITY, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2020/111884
Kind Code:
A1
Abstract:
The present invention provides an aluminum-based plated steel plate used in hot-press forming, the steel plate comprising: a base steel plate; and a plating layer formed on the base steel plate, wherein the plating layer comprises: an alloying layer formed on the surface of the base steel plate and including one or more of Fe 3Al, FeAl(Si), Fe 2Al 5, and FeAl 3 ; and an aluminum layer formed on the alloying layer and having a thickness less than 10% of the thickness of the plating layer, and the plating layer has a thickness of 5-20 ㎛ and an oxygen content of 10 weight% or less, as measured by GDS, at a depth of 0.1 ㎛ from the surface of the plating layer.
More Like This:
Inventors:
OH JIN-KEUN (KR)
KIM SEONG-WOO (KR)
CHO YEOL-RAE (KR)
KIM SANG-HEON (KR)
KIM SEONG-WOO (KR)
CHO YEOL-RAE (KR)
KIM SANG-HEON (KR)
Application Number:
PCT/KR2019/016769
Publication Date:
June 04, 2020
Filing Date:
November 29, 2019
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C23C2/28; C22C38/00; C22C38/02; C22C38/04; C22C38/06; C23C2/12; C23C2/40; C23C24/04; C23C28/02
Foreign References:
| KR101696121B1 | 2017-01-13 | |||
| KR20150075435A | 2015-07-06 | |||
| KR20110018420A | 2011-02-23 | |||
| JPH09310163A | 1997-12-02 | |||
| KR20100011688A | 2010-02-03 | |||
| US6296805B1 | 2001-10-02 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
Download PDF: