Title:
COATED STEEL PLATE
Document Type and Number:
WIPO Patent Application WO/2016/208621
Kind Code:
A1
Abstract:
This coated steel plate is provided with: a base steel plate; a galvanization layer formed on the base steel plate; a zinc phosphate film formed on the galvanization layer and containing zinc phosphate crystals, the zinc phosphate film being deposited in the amount of 0.4-2.5 g/m2; a lower-layer film which is an inorganic film or an organic/inorganic composite film, formed on the zinc phosphate film and deposited in the amount of 50-2000 mg/m2; and an upper-layer film formed on the lower-layer film, the upper-layer film having a film thickness of 2.0-10.0 µm and containing 5-25% by mass of a first carbon black; the maximum gap between the zinc phosphate crystals at the interface of the galvanization layer and the zinc phosphate film being 0.2 µm or less.
Inventors:
KAWAMURA YASUAKI (JP)
YAMAOKA IKURO (JP)
TOSHIN KUNIHIKO (JP)
ISHIZUKA KIYOKAZU (JP)
OKADA KATSUMI (JP)
YAMAOKA IKURO (JP)
TOSHIN KUNIHIKO (JP)
ISHIZUKA KIYOKAZU (JP)
OKADA KATSUMI (JP)
Application Number:
PCT/JP2016/068512
Publication Date:
December 29, 2016
Filing Date:
June 22, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
C23C28/00; B32B15/08; B32B27/20; C09D5/00; C23C2/06; C23C22/12; C25D5/26
Foreign References:
| JP2006291280A | 2006-10-26 | |||
| JP2009220511A | 2009-10-01 | |||
| JP2013244696A | 2013-12-09 | |||
| JP2014000799A | 2014-01-09 | |||
| JP2009012342A | 2009-01-22 | |||
| JP2013170305A | 2013-09-02 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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