Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
STEEL SHEET PLATED WITH AL-FE FOR HOT PRESS FORMING HAVING EXCELLENT CORROSION RESISTANCE AND SPOT WELDABILITY, AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/111881
Kind Code:
A1
Abstract:
The present invention provides a steel sheet plated with aluminum-iron and a preparation method therefor, the steel sheet comprising: a base steel sheet; and a plated layer formed on the surface of the base steel sheet and comprising: an alloyed layer containing at least one of Fe3Al, FeAl(Si), Fe2Al5, and FeAl3; and an aluminum layer formed on the alloyed layer and having a thickness less than 10% of that of the plated layer, wherein the plated layer is 20-35㎛ in thickness and contains 1-20 wt% of Mg as measured by GDS at a position 0.1㎛ deep from the surface of the plated layer and 10 wt% of oxygen as measured by GDS at a position 0.1㎛ deep from the surface of the plated layer.

Inventors:
OH JIN-KEUN (KR)
KIM SEONG-WOO (KR)
KIM SANG-HEON (KR)
CHO YEOL-RAE (KR)
Application Number:
PCT/KR2019/016763
Publication Date:
June 04, 2020
Filing Date:
November 29, 2019
Export Citation:
Click for automatic bibliography generation   Help
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:
KR20090020751A2009-02-27
JP2012255204A2012-12-27
KR101839253B12018-03-15
KR101591982B12016-02-05
KR20180074449A2018-07-03
US6296805B12001-10-02
Other References:
See also references of EP 3889312A4
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
Download PDF: