Hot-dip Zn-plated steel sheet

The hot-dip Zn-plated steel sheet comprises a steel sheet and a plating layer formed on at least a part of the surface of the steel sheet, the plating layer having a chemical composition comprising, in mass%, 6.00-35.00% of Al, 2.00-12.00% of Mg, 0.005-2.00% of Ca, 0-2.00% of Si, 0-2.00% of Fe, 0-0.50% of Sb, 0-0.50% of Sr, 0-0.50% of Pb, 0-1.00% of Sn, 0-1.00% of Cu, 0-1.00% of Ti, 0-1.00% of Ni, 0-1.00% of Mn, and 0-1.00% of Cr, the remainder being Zn and impurities, and the plating layer having a thickness-direction cross-section in which the thickness of the plating layer is less than or equal to the area ratio of the MgZn2 phase is 15-60%, and the MgZn2 phase contains a Ca-based intermetallic compound having an equivalent circle diameter of 0.10 [mu] m or less. 该热浸镀Zn系镀敷钢板具有钢板和镀层，该镀层被形成于所述钢板的表面中的至少一部分，所述镀层以质量％计，具有由以下物质构成的化学组成：Al：6.00～35.00％、Mg：2.00～12.00％、Ca：0.005～2.00％、Si：0～2.00％、Fe：0～2.00％、Sb：0～0.50％、Sr：0～0.50％、Pb：0～0.50％、Sn：0～1.00％、Cu：0～1.00％、Ti：0～1.00％、Ni：0～1.00％、Mn：0～1.00％、Cr：0～1.00％、剩余部分：Zn及杂质，所述镀层