机械合金化制备Al-Pb纳米相复合结构的热力学分析  

Thermodynamic analysis of Al-Pb nanophase composite prepared by mechanical alloying

作　　者：吴志方[1,2] 周帆[1,2] 周 吴润[1,2] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,武汉430081 [2]武汉科技大学耐火材料与冶金国家重点实验室,武汉430081

出　　处：《粉末冶金材料科学与工程》2015年第3期344-348,共5页Materials Science and Engineering of Powder Metallurgy

基　　金：国家自然科学基金资助项目(51201118);国家级大学生创新创业训练计划项目(201210488023);清洁能源材料广东省普通高校重点实验室资助项目(KLB11003)

摘　　要：参考Miedema半经验公式,建立Al-Pb系机械合金化过程的热力学模型,并对所制备的Al-10%Pb粉末进行热力学计算和对比分析。实验表明利用机械合金化方法可以获得在Al基体上均匀弥散分布着纳米相Pb的复合结构;热力学计算结果表明,Al-Pb系粉末机械合金化过程不具备形成非晶相、固溶体和中间化合物的热力学驱动力。采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)分析Al-10%Pb合金在高能球磨过程中的组织结构,表明,所建立的热力学模型是正确的。A thermodynamic model of mechanical alloying of Al-Pb system was established based on Miedema semi-experimental theory for guiding the preparation of Al-10%Pb mechanical alloying （MA） and thermodynamic calculation and analysis. Experiment shows that the Al-Pb nanophase composite alloy in which Pb particles dispersed into the Al matrix has been prepared by mechanical alloying. The thermodynamic analysis shows that there is no driving force to form amorphous phase, solid solution and intermediate compound. Microstructure of Al-10%Pb alloy during high energy ball milling was characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. All of the calculation results are agreed with the experimental results.

关 键 词：机械合金化 热力学 AL-PB合金 纳米相复合结构 

分 类 号：TB383[一般工业技术—材料科学与工程]