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반응용탕단조법에 의한 (Al2O3+Si)/Mg 하이브리드 금속복합재료의 제조 및 특성평가
오동현 ( Dong Hyun Oh ),전상혁 ( Sang Hyuk Jeon ),박익민 ( Ik Min Park ),조경목 ( Kyung Mox Cho ),최일동 ( Il Dong Choi ) 한국주조공학회 2000 한국주조공학회지 Vol.20 No.1
In the present study, (10%Al2O3+5%Si)/AZ91 Mg hybrid composite was fabricated using the squeeze casting method. During squeeze casting, molten Mg was infiltrated into the preform of 10%Al2O3+5%Si and reaction product of Mg2Si intermetallic compound was formed by the reaction between molten Mg and Si powder. Microstmcture has been observed and mechanical properties were evaluated for the reaction squeeze cast (RSC) hybrid composite. It was found that Si powder totally reacted with molten Mg to form Mg2Si. Reinforcement (Al2O3) and the reaction product (Mg2Si) are fairly uniformly distributed in Mg matrix for the squeeze cast hybrid composite. Mechanical properties were improved with hybridization of reinforcements, namely higher hardness and enhanced wear resistance comparing squeeze cast (l5%A2lO3)/AZ91 Mg composite.