【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。更多还原

【Abstract】 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℃.更多还原