选用两种粒径的SiC颗粒,采用挤压铸造方法制备了体积分数为70%的SiCp/LD11(Al-12%Si)复合材料,研究了材料的微观组织和导热性能.研究表明:复合材料组织均匀、致密;SiC-Al界面干净,而基体中的Si相分别存在从铝中直接析出和依附SiC颗粒表面生长这两种分布形态;复合材料导热性能优异,其导热率大于基体LD11铝合金的导热率.
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