Invention Grant
- Patent Title: Galvanized steel sheet
- Patent Title (中): 镀锌钢板
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Application No.: US13521302Application Date: 2010-07-09
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Publication No.: US08852753B2Publication Date: 2014-10-07
- Inventor: Kenichiroh Matsumura , Makoto Nakazawa , Masahiro Yui , Takehiro Takahashi
- Applicant: Kenichiroh Matsumura , Makoto Nakazawa , Masahiro Yui , Takehiro Takahashi
- Applicant Address: JP Tokyo
- Assignee: Nippon Steel & Sumitomo Metal Corporation
- Current Assignee: Nippon Steel & Sumitomo Metal Corporation
- Current Assignee Address: JP Tokyo
- Agency: Kenyon & Kenyon LLP
- International Application: PCT/JP2010/061703 WO 20100709
- International Announcement: WO2012/004889 WO 20120112
- Main IPC: B32B15/04
- IPC: B32B15/04 ; B32B15/18 ; C23C28/00 ; C23C2/28 ; C23C2/06 ; C23C2/02

Abstract:
The present invention provides a galvanized steel sheet including: a steel sheet; and a galvanizing layer provided on a surface of the steel sheet; wherein the galvanizing layer includes an amorphous coating layer having an inorganic oxoacid salt and metallic oxide on a surface layer of the galvanizing layer; the galvanizing layer includes a ζ phase and a δ1 phase; the galvanizing layer includes, by mass, 8 to 13% of Fe; Zn in the metallic oxide exists up to an outermost surface layer of the amorphous layer; and an X-ray diffraction intensity ratio I, which is obtained by dividing an X-ray diffraction intensity of the ζ phase at d=0.126, after removing background intensity, by an X-ray diffraction intensity of the δ1 phase at d=0.126, after removing background intensity, is 0.06 to 0.35.
Public/Granted literature
- US20120288734A1 GALVANIZED STEEL SHEET Public/Granted day:2012-11-15
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