| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an Al-Zn-based hot-dip plated steel sheet using a Si- and Mn-containing steel sheet as a base steel sheet and having excellent plating appearance and corrosion resistance. <P>SOLUTION: The Al content in an Al-Zn-based plating layer is 20-95 mass%. Also the Ca content in the Al-Zn-based plating layer is 0.01-10 mass%. Or, the total content of Ca and Mg is 0.01-10 mass%. Further, in a steel sheet surface portion within 100 μm from the surface of the base steel sheet directly below the Al-Zn-based plated layer, there is per side a total less than 0.060 g/m<SP POS="POST">2</SP>of oxides of at least one species chosen from Fe, Si, Mn, Al, P, B, Nb, Ti, Cr, Mo, Cu and Ni. <P>COPYRIGHT: (C)2012,JPO&INPIT |
