THE BEHAVIOR OF CaO IN MAGNESIUM ALLOYS

摘要

Magnesium alloys present a number of interesting properties, such as high specific strength, good castability, low density, etc. Despite these properties, Magnesium alloys are used with precautions of high chemical reactivity, limited high strength and creep resistance at elevated temperatures. Research has been directed to improve these properties by alloying and/or composites manufacturing. It is well known that Ca, though its high cost, is effective for oxidation resistance and particle reinforced Magnesium composites have desirable high mechanical properties. The aim of this study is to manufacture CaO particle reinforced Magnesium composites in terms of improving oxidation resistance and mechanical properties. The Magnesium composites were manufactured by RCM (Rotation Cylinder Method) and the effects of CaO on oxidation resistance, fluidity and mechanical properties of Magnesium composites were investigated.