Title:
HIGHLY CORROSION-RESISTANT PLATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND SURFACE QUALITY, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/265307
Kind Code:
A1
Abstract:
One aspect of the present invention provides a plated steel sheet and a manufacturing method therefor, the plated steel sheet comprising: a base steel sheet; a Zn-Mg-Al-based plated layer provided on at least one surface of the base steel sheet; and an Fe-Al-based inhibition layer provided between the base steel sheet and the Zn-Mg-Al-based plated layer, wherein, on the surface of the Zn-Mg-Al-based plated layer, the total area fraction of an Al single phase and MgZn2 phase is 45-60%, and the area ratio of the MgZn2 phase to the Al single phase is 1.2-3.3.
Inventors:
KIM SUNG-JOO (KR)
SOHN IL-RYOUNG (KR)
KIM TAE-CHUL (KR)
KIM KWANG-WON (KR)
HAN SANG-TAE (KR)
KIM MYUNG-SOO (KR)
CHO YONG-KYUN (KR)
SOHN IL-RYOUNG (KR)
KIM TAE-CHUL (KR)
KIM KWANG-WON (KR)
HAN SANG-TAE (KR)
KIM MYUNG-SOO (KR)
CHO YONG-KYUN (KR)
Application Number:
PCT/KR2022/008200
Publication Date:
December 22, 2022
Filing Date:
June 10, 2022
Export Citation:
Assignee:
POSCO CO LTD (KR)
International Classes:
C23C2/26; B21B1/22; B21B1/36; C23C2/06; C23C2/40
Domestic Patent References:
| WO2021256906A1 | 2021-12-23 |
Foreign References:
| KR20210035722A | 2021-04-01 | |||
| KR20210071631A | 2021-06-16 | |||
| KR20160078912A | 2016-07-05 | |||
| KR20190078435A | 2019-07-04 | |||
| KR20100073819A | 2010-07-01 | |||
| KR20190078331A | 2019-07-04 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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