Title:
ZN-NI ELECTROPLATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND FORMABILITY AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/117751
Kind Code:
A1
Abstract:
The present invention relates to a Zn-Ni electroplated steel sheet having excellent corrosion resistance and formability and a manufacturing method therefor. One embodiment of the present invention provides a Zn-Ni electroplated steel sheet having excellent corrosion resistance and formability and a manufacturing method therefor, the steel sheet comprising: a base steel sheet; and a Zn-Ni plated layer formed on the base steel sheet, wherein a Ni alloying degree within the Zn-Ni plated layer is 7.5-14%, and the Ni amount is 40-50 atom% in a region within 1 μm toward the Zn-Ni plated layer from an interface of the base steel sheet and the Zn-Ni plated layer. According to the present invention, provided is a Zn-Ni electroplated steel sheet, which has superior corrosion resistance and formability despite having a relatively low nickel alloying degree, has excellent price competitiveness compared with that of a conventional Zn-Ni plated steel sheet and two-layer plated steel sheet, and can ensure high productivity.
Inventors:
KWON MOON-JAE (KR)
KANG CHOON-HO (KR)
KIM SU-YOUNG (KR)
KANG CHOON-HO (KR)
KIM SU-YOUNG (KR)
Application Number:
PCT/KR2017/015387
Publication Date:
June 28, 2018
Filing Date:
December 22, 2017
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C25D3/56; C22C18/00; C25D5/50; C25D7/06
Foreign References:
JPH1161481A | 1999-03-05 | |||
KR850004136A | 1985-07-01 | |||
JPH06336692A | 1994-12-06 | |||
JPH07278883A | 1995-10-24 | |||
KR20130026382A | 2013-03-13 | |||
JPH08165594A | 1996-06-25 | |||
US3420754A | 1969-01-07 |
Other References:
See also references of EP 3561156A4
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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