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Title:
HOT-DIP ZINC-COATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2012/004889
Kind Code:
A1
Abstract:
Disclosed is a hot-dip zinc-coated steel sheet provided with a steel sheet and a coating layer applied to the surface of the aforementioned steel sheet. The aforementioned coating layer contains, at the surface layer thereof, an amorphous film containing a metal oxide and an inorganic oxoate, the aforementioned coating layer has a ζ phase and a δ1 phase, the aforementioned coating layer contains at least 8 mass% and no greater than 13 mass% of Fe, the Zn contained in the aforementioned metal oxide is present up to the outermost layer of the aforementioned amorphous film, the value of the X-ray diffraction intensity ratio, which is the X-ray diffraction intensity after background subtraction at a crystal lattice spacing of 0.126 nm of the aforementioned ζ phase divided by the X-ray diffraction intensity after background subtraction at a crystal lattice spacing of 0.127 nm of the aforementioned δ1 phase, is at least 0.06 and no greater than 0.35.

Inventors:
MATSUMURA KENICHIROH (JP)
NAKAZAWA MAKOTO (JP)
YUI MASAHIRO (JP)
TAKAHASHI TAKEHIRO (JP)
Application Number:
PCT/JP2010/061703
Publication Date:
January 12, 2012
Filing Date:
July 09, 2010
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
MATSUMURA KENICHIROH (JP)
NAKAZAWA MAKOTO (JP)
YUI MASAHIRO (JP)
TAKAHASHI TAKEHIRO (JP)
International Classes:
C23C2/06; C23C28/00
Foreign References:
JPH04176878A1992-06-24
JP2002012958A2002-01-15
JP2003138361A2003-05-14
JPS6468456A1989-03-14
JPH0413855A1992-01-17
JPH03191045A1991-08-21
JPH0892714A1996-04-09
JPH04176878A1992-06-24
JP2003171751A2003-06-20
JP2007217784A2007-08-30
Other References:
See also references of EP 2527493A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Download PDF:
Claims: