利用挤压铸造方法制备了SnO2涂覆硼酸铝晶须增强纯铝复合材料(晶须体积分数为20%),研究了涂层和复合材料的微观组织结构、界面反应,并对复合材料的高温拉伸力学性能进行了测试和分析.结果表明,SnO2涂层的引入改善了晶须增强铝基复合材料的界面状态,使得复合材料的拉伸强度随着温度的升高和涂层含量的增加先增加然后降低,当SnO2包覆涂层与晶须的质量比为1:20时,晶须增强纯铝基复合材料的拉伸温度在300℃得到了最好的拉伸塑性.
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