Ca和Zn对铸态镁高温抗氧化性及室温力学性能的影响

Influence of Ca and Zn on the High-temperature Oxidation Resistance and Room ─temperature Mechanical Property of Mg in As─cast Condition

对提高铸态镁高温抗氧化性和室温力学性能的方法进行了试验研究。试验结果表明，Ｍｇ加入Ｃａ后能使其高温抗氧化性明显提高，但室温力学性能有所降低；Ｍｇ中加入Ｚｎ后能使高温抗氧化性有一定的提高，同时较好地改善了室温力学性能；Ｍｇ中同时加入Ｃａ和Ｚｎ后能使其高温抗氧化性显著提高，而室温力学性能也有较好的改善。

The method to improve the high-temperature oxidation resistance and room-temperature mechanical property of Mg in as -cast condition are studied. The result showed when Ca is added, the high-temperature oxidation resistance can be improved significantly, but its room-temperature mechanical property is reduced; when Zn is added, its high-tempeature oxidation resistance and room-temperature mechanical property can be both improved tO a certain extent; when both Ca and Zn are added, its high-temperature oxidation resistance and room-temperature mechanical property can be improved satisfyingly.