【摘 要】
：
Al2O3-SiO2(sf)/AZ91D composite was fabricated by squeezing infiltration using preform made of crystallized aluminum silicate short fibers as reinforcement and a
【机 构】
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College of Mechanical Engineering,Department of Mechanical and Electronic Engineering
论文部分内容阅读
Al2O3-SiO2(sf)/AZ91D composite was fabricated by squeezing infiltration using preform made of crystallized aluminum silicate short fibers as reinforcement and aluminum phosphate as binder. The interfacial reaction products were investigated by optical microscopy, X-ray diffractometry, scanning electron microscopy, and the thermodynamics was discussed. It is shown that alumina silicate fibers are ideal candidates for the reinforcement of the Mg alloy matrix composites, and the perfect strong interfaces were formed by the chemical reaction between Mg in the magnesium alloy matrix and aluminum phosphate binder through generation of MgO particles. In addition, brittle Mg2Si phase was precipitated at the interface through the reaction between amorphous SiO2 and Mg in the magnesium alloy matrix, which affects the mechanical property of the composite.
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