不同退火条件下Al-Eu合金粉末的组织结构与氧化性能  

Microstructure and oxidation behavior of Al-Eu alloy powders under different annealing conditions

作　　者：付豪[1] 邹辉[1] 

机构地区：[1]华中科技大学材料成型与模具技术国家重点实验室,湖北武汉430074

出　　处：《轻金属》2016年第6期53-58,共6页Light Metals

基　　金：国家自然科学联合基金项目:新型铝基稀土合金的结构与能量释放的构效关系研究;编号:U1530127

摘　　要：通过紧耦合气雾化法制备得到了一系列Al-Eu二元合金粉末,并通过XRD、SEM/EDS以及TG-DTA等手段对其进行了测试表征,探索了将稀土Eu应用于金属燃料的可行性。结果表明,Al-3Eu合金粉末在1300℃时氧化增重达到了61.1%,氧化放热焓高达8108.2μV·s·mg^(-1)。Al-3Eu合金粉末在400℃下退火0.5h后,氧化放热焓达到了9243.4μV·s·mg^(-1),退火2h后,氧化增重达到了78.8%,两者均高于未经热处理的Al-3Eu合金粉末。A series of Al - Eu alloy powders were designed and prepared successfully by the close - coupled gas atomization （ CCGA）. These powders were characterized through X - ray powder diffraction, SEM/EDS, and TG - DTA to explore the feasibility of application of Eu in metal fuel. The results show that, the oxidation weight increase ratio of the Al - 3Eu alloy powder is 61.1% and the oxidation exothermic enthalpy of the Al - 3 Eu alloy powder is as high as 8108.2μV·s·mg^-1. The oxidation exothermic enthalpy of the Al - 3Eu alloy powder under 0. 5h - annealing treatment and 400℃ reached 9243.4μV·s·mg^-1, and the oxidation weight increase ratio of the Al - 3Eu alloy powder under 2h - annealing treatment reached 78. 8%.

关 键 词：Al-Eu 合金 紧耦合气雾化法 氧化性能 金属燃料 

分 类 号：TF123.71[冶金工程—粉末冶金]