【摘要】 证明了真空热处理过程对用熔铸法重力浇注制备的优质石墨铝硅复合材料的性能有较好影响。通过与石墨包覆铜法和简单可靠的机械合金化法相比较， 证明经真空热处理过程制备的上述材料的高温强度达到１５０ ＭＰａ 以上， 力学性能、物理性能也较好， 是制取优质石墨铝硅复合材料必需可靠的手段， 该法还具有工艺简单可靠、成本低廉更多还原

【Abstract】 It has been proved that vacuum heat treatment can benifit the properties of high quality graphite aluminium silicon material through gravitational cast. Compared the copper plating graphite and ordinary MA method with the process of vacuum heat treatment in gravitational cast, the vacuum heat treatment is essential to produce the high quality graphite aluminium silicon material. The high temperature strength of the samples is over 150 MPa, the mechanical and thermal properties are also improved, the technique is simple and the cost is low.更多还原