综合搅拌铸造法和原位反应合成制备了Al2O3增强铝基复合材料,向熔体中直接加入Al2(SO4)3粉体,由该粉体反应分解的Al2O3原位合成铝基复合材料.用此方法制备复合材料,既可节约成本,同时由Al2(SO4)3分解的SO3又可以对熔体进行精炼、除气.结果表明,Al2O3颗粒和基体结合良好,没有发现气孔、团聚、集聚、偏析,克服了传统搅拌铸造所带来的铸造缺陷.Al2O3弥散增强铝基复合材料具有良好的冲击韧性和耐磨性能.
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