(昆明理工大学 材料与冶金工程学院，昆明 650093)
摘 要: 以煤飞灰颗粒为增强相，用液态烧结粉末冶金方法，制备了铝/飞灰复合材料。用热力学数据库分析考察了液相烧结过程中的反应性和新生成相。用XRD分析方法结合扫描电镜，研究发现飞灰中的部分成分与液态铝进行了反应，形成了单质Si，Fe，Ti以及Al和Si，Fe，Ti的金属间化合物。反应的发生导致了飞灰颗粒的非晶态及反应特性的改变。
关键词: 铝/飞灰复合材料； 反应性； 液相烧结
Al/fly ash particulate composites
（Faculty of Materials and Metallurgical Engineering，
Kunming University of Science and Technology，Kunming 650093， P.R.China）
Abstract:The Al/fly ash composites were fabricated by liquid sintering P/M process with fly ash particles as reinforcing phases. The reactivity and newly formed phases during liquid sintering process were analyzed by thermochemical data base calculation and XRD characterization. The results show that some of constituents in fly ash react with liquid aluminum so that the elemental Si，Fe，Ti as well as some amount of intermetallic compounds form. These in-situ reactions result in the change of reactivity features of amorphous fly ash particles.
Key words: Al/fly ash composites； reactivity； liquid sintering
