| 摘要 |
[Problem] To produce a hot-dip Zn-Al-Mg alloy coated steel sheet that is excellent in coating adhesion, by using, as a base sheet for coating, a steel sheet that is imparted with resistance to liquid metal embrittlement cracking by adding B. [Solution] A hot-dip zinc alloy coated steel sheet excellent in coating adhesion containing at least one of a Si simple oxide, a Mn simple oxide, a Cr simple oxide, a Si-Mn composite oxide, a Si-Cr composite oxide, a Mn-Cr composite oxide, and a Si-Mn-Cr composite oxide in a portion within 10 µm from an interface between a steel sheet as a base sheet for coating, and a hot-dip galvanized layer formed on a surface thereof. |
