Title:
Al-PLATED HOT STAMPED STEEL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2021/235083
Kind Code:
A1
Abstract:
Provided is an Al-plated hot stamped steel material comprising a steel base material, an Al plating layer that is formed on at least one surface of the steel base material, and a chemical conversion-treated film that is formed on the Al plating layer and includes a zinc phosphate-based crystal and a Ce-based compound adhered to the surface of the zinc phosphate-based crystal, the Al-plated hot stamped steel material being characterized in that the adhered amount of the zinc phosphate-based crystal in the chemical conversion-treated film is 0.3-4.0 g/m2 in terms of metallic Zn and the area ratio of the Ce-based compound in the chemical conversion-treated film is 0.5-25%.
Inventors:
YAMAGUCHI SHINICHI (JP)
FUJITA SOSHI (JP)
FUJITA SOSHI (JP)
Application Number:
PCT/JP2021/012395
Publication Date:
November 25, 2021
Filing Date:
March 24, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C28/00; C23C2/12; C23C22/07; C23C22/78
Domestic Patent References:
| WO2013122004A1 | 2013-08-22 |
Foreign References:
| JPH11502569A | 1999-03-02 | |||
| JP2010106334A | 2010-05-13 | |||
| JPH04276087A | 1992-10-01 |
Other References:
GIRCIENE, 0.: "Active corrosion protection capacity of phosphate-permagnate conversion coatings doped with cerium", CHEMIJA, vol. 27, no. 1, 2016, pages 1 - 10, XP055874786
See also references of EP 4155427A4
See also references of EP 4155427A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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