银稀土合金的氧化研究  

The Study of Oxidation of Silver-RE Alloys

作　　者：吴春萍[1] 陈敬超[1] 鲜春桥[1] 李玉华[1] 

机构地区：[1]昆明理工大学云南省新材料制备与加工重点实验室,云南昆明650093

出　　处：《贵金属》2005年第3期34-38,共5页Precious Metals

基　　金：云南省科技攻关项目(2002GG04)

摘　　要：研究了银稀土合金内氧化的热力学和动力学问题。研究结果表明,银稀土合金的内氧化在热力学上是可行的。实验测出了银稀土合金的氧化动力学曲线和氧化速率曲线,结果表明AgCe合金的氧化速率大于AgY合金;[O]在合金中的扩散除了和温度、时间有关外,还和合金中溶质的原子尺寸、原子电负性、原子价,原子序数、熔点有关。The thermodynamics and kinetics of internal oxidation of Ag-RE alloys were studied in the present paper. The result of the study showed that the internal oxidation behavior of Ag-RE alloy was feasible thermodynamically. The curves of oxidation dynamics and oxidation rate of Ag-RE alloy were obtained by the experiment. The result showed that the oxidation rate of AgCe alloy was larger than that of AgY alloy. The diffusion of [O] in the alloys was changed with changing in some factors, such as temperature, time, atom size, atom electronegative, atomic value, atomic number et al.

关 键 词：稀土合金 氧化动力学曲线 银 氧化速率 动力学问题 原子电负性 研究结果 原子尺寸 原子序数 热力学 内氧化 

分 类 号：TG146.45[一般工业技术—材料科学与工程] O614.122[金属学及工艺—金属材料]