采用化学方法在Al18B4O33晶须表面涂覆Bi(OH)3,对所制备的晶须预制件进行不同温度的烧结,在晶须表面获得不同结构的涂层.利用挤压铸造方法制备相应的纯铝基复合材料.研究了烧结温度对复合材料微观组织和阻尼性能的影响.结果表明:晶须预制件烧结温度对涂覆复合材料界面微观组织和阻尼性能有显著影响,当烧结温度为530及830℃时,2种复合材料中均存在2个阻尼峰(位错阻尼与界面阻尼),后者的阻尼在整个测试温度范围内最高;当预制件烧结温度为1000℃时,复合材料中仅存在一个界面阻尼峰,产生这种现象的原因主要是由于它们的界面状态不同造成的.
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