稀土和难熔金属元素对铂的高温蠕变激活能的影响  

The Effects of Some Rare-Earth Elements and Refractory Metals on the Creep Activation Energy of Platinum at High Temperatures

作　　者：胡昌义[1] 何华春[1] 陈伏生[1] 

机构地区：[1]中国昆明贵金属研究所

出　　处：《贵金属》1998年第1期1-4,共4页Precious Metals

基　　金：国家自然科学基金

摘　　要：研究微量稀土元素（Ｙ、Ｎｄ、Ｓｍ、Ｅｕ、Ｇｄ、Ｅｒ和Ｙｂ等）和少量的难熔金属（Ｗ、Ｔａ、Ｒｅ等）对铂的高温蠕变激活能的影响，结果表明在１２００～１３００℃，稀土元素提高铂的蠕变激活能；难熔金属显著降低铂的蠕变激活能；Ｐｔ－０．５Ｇｄ合金在１３５０～１４００℃具有最高的蠕变激活能值。The effects of rare-earth elements (Y, Nd, Sm, Eu, Gd, Er and Yb) and refractory metals (W, Ta, Re) on the Creep activation energy of platinum had been investigated. Small amount addition of rare-earth elements did increase the creep activation energy of Pt when the tested temperatures were in the range of 1200℃ to 1300℃, whereas the addition of refractory metals did decrease the activation energy of Pt remarkably. The alloy of Pt-0.5Gd had the largest creep activation energy among all the samples tested in the temperature range of 1350℃ to 1400℃.

关 键 词：铂 稀土 难熔金属 蠕变激活能 

分 类 号：TG146.33[一般工业技术—材料科学与工程]