粉煤灰颗粒增强铝基复合材料的组织与性能
Microstructure and Mechanical Properties of Fly-ash / Al-20%Si Composites
邱轶兵, 王庆平, 闵凡飞, 曹银南
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作者单位：安徽理工大学 材料科学与工程学院, 安徽 淮南 232001
中文关键字：粉煤灰； 粉末冶金法； 铝基复合材料
英文关键字：fly-ash; powder metallurgy technique; aluminium-matrix composite
中文摘要：以浓硫酸处理过的粉煤灰颗粒为增强体，Al-20%Si合金粉为基体，采用粉末冶金法制得粉煤灰颗粒增强铝基复合材料，并对复合材料的微观形貌及力学性能进行了分析。结果表明：粉煤灰颗粒表面被腐蚀，比表面积大大增大；在复合材料中粉煤灰颗粒分布较均匀，有少量气孔存在；随着粉煤灰含量的提高，该材料硬度逐渐增大，而密度逐渐减小。
英文摘要：-The powder metallurgy technique was used to prepare fly-ash-reinforced Al-Si alloy composites, and the microstructure and mechanical properties were analyzed. The results show that the surface of fly-ash particles were eroded; fly-ash in the composites distributes uniformly and a small amount of the gas hole comes into being in the composites. Hardness of the composites increases significantly and density decreases with the increase of fly ash particles content.