Title:
IRON-ALUMINUM-BASED PLATED STEEL SHEET FOR HOT PRESS FORMING, HAVING EXCELLENT HYDROGEN DELAYED FRACTURE PROPERTIES AND SPOT WELDING PROPERTIES, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/111883
Kind Code:
A1
Abstract:
The present invention provides an iron-aluminum-based plated steel sheet, and a manufacturing method therefor, the iron-aluminum-based plated steel sheet comprising a base steel sheet and a plated layer formed on the surface of the base steel sheet, wherein the alloy plated layer comprises: a diffusion layer comprising an Fe-Al-based intermetallic compound having a cubic structure; and an alloyed layer formed on the diffusion layer and composed of an alloy phase differing from that of the cubic structure, the thickness of the diffusion layer is 3-20 μm, and the thickness of the diffusion layer is greater than 50% of the total thickness of the plated layer.
Inventors:
OH JIN-KEUN (KR)
KIM SEONG-WOO (KR)
KIM SANG-HEON (KR)
CHO YEOL-RAE (KR)
KIM SEONG-WOO (KR)
KIM SANG-HEON (KR)
CHO YEOL-RAE (KR)
Application Number:
PCT/KR2019/016766
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:
| KR20150075435A | 2015-07-06 | |||
| KR20100082537A | 2010-07-19 | |||
| KR101696121B1 | 2017-01-13 | |||
| JP2001073108A | 2001-03-21 | |||
| KR100988491B1 | 2010-10-20 |
Other References:
See also references of EP 3889315A4
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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