| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot dip galvannealed steel sheet which has both of improved corrosion resistance and excellent plating adhesion although a large amount of easily oxidizable element such as Mg or Al is not incorporated in a plated layer. SOLUTION: The hot dip galvannealed steel sheet has a Zn-plated layer containing, by mass, 5.0-20.0% Fe and 0.01-0.5% Al on the surface of a steel sheet base material. A particulate substance having an average particle diameter of≤1μm, containing Fe, Al, Si and Zn, and substantially free from oxygen is contained in the Zn-plated layer. COPYRIGHT: (C)2009,JPO&INPIT
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