Invention Grant
- Patent Title: High corrosion resistance hot dip galvanized steel material
- Patent Title (中): 高耐腐蚀热浸镀锌钢材
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Application No.: US12224967Application Date: 2007-03-14
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Publication No.: US08663818B2Publication Date: 2014-03-04
- Inventor: Koichi Nose , Kohei Tokuda , Yuichi Sato , Makoto Nakazawa
- Applicant: Koichi Nose , Kohei Tokuda , Yuichi Sato , Makoto Nakazawa
- 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
- Priority: JP2006-076547 20060320; JP2006-102108 20060403; JP2007-024427 20070202
- International Application: PCT/JP2007/055778 WO 20070314
- International Announcement: WO2007/108496 WO 20070927
- Main IPC: B32B15/00
- IPC: B32B15/00 ; B32B15/01

Abstract:
The present invention provides a high corrosion resistance hot dip galvannealed steel material comprised of a Zn-based hot dip plated steel material achieving both a higher corrosion resistance of the plated layer itself by the added elements and sacrificial protection of iron metal by the plated layer or workability free of degradation caused of formation of intermetallic compounds by added elements, that is, a high corrosion resistance hot dip Zn plated steel material characterized in that an alloy plated layer containing Zn: 35 mass % or more, preferably 40 mass % or more, contains a non-equilibrium phase having a heat capacity by differential scanning calorimetry of 1 J/g or more. Furthermore, 5% or more, preferably 50% or more in terms of vol % is an amorphous phase. The alloy layer may contain, by mass %, Mg: 1 to 60% and Al: 0.07 to 59%, may further contain one or more elements selected from Cr, Mn, Fe, Co, Ni, and Cu in a total of 0.1 to 10%, and may in addition contain one or more elements of 0.1 to 10% of La, 0.1 to 10% of Ce, 0.1 to 10% of Ca, 0.1 to 10% of Sn, 0.005 to 2% of P, and 0.02 to 7% of Si.
Public/Granted literature
- US20090053555A1 High Corrosion Resistance Hot dip Galvanized Steel Material Public/Granted day:2009-02-26
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