透氢用钯合金的研究与开发  

R & D of the Palladium Alloy Used for the Hydrogen Osmosis

作　　者：曾立英[1] 袁弘鸣[1] 李士江[1] 

机构地区：[1]西北有色金属研究院

出　　处：《稀有金属材料与工程》1998年第4期194-198,共5页Rare Metal Materials and Engineering

摘　　要：综述了钯合金成分和结构对透氢性能的影响。指出ＰｄＲＥ系合金，尤其是ＰｄＹ合金比实用化的Ｐｄ２５ａｔ％Ａｇ透氢性能优越。有序无序转变对钯合金的透氢性能有影响。ＰｄＲＥ合金中有序无序转变研究较多的是ＰｄＣｅ、ＰｄＧｄ合金，但它们的透氢速率却都不如ＰｄＹ合金。电阻测量的结果表明ＰｄＹ合金中存在Ｐｄ３Ｙ型的短程有序结构，有人又发现该合金中存在Ｐｄ７Ｙ型的长程有序结构，是由Ｌ１２型的Ｐｄ３Ｙ转化而来的。The influence of the alloying elements and microstructures on the hydrogen permeability of a Pd alloy are reviewed. The hydrogen permeabilities of the alloys PdRE (the alloy PdY especially) are superior to that of the alloy Pd25at%Ag which is presently wide use. A major factor affecting the hydrogen permeability is an orderdisorder transition. The influence of the orderdisorder transition on the hydrogen permeabilities of the alloys PdCe and PdGd has been extensively studied, although their hydrogen permeabilities are not good as the alloy PdY. From the curve of electrical resistance vs. temperature, it can be concluded that a Pd3Y shortrangeorder superlattice and a Pd7Y longrangeorder (LRO) superlattice exist in the alloy PdY. It is thought that the Pd7Y LRO superlattice is transformed from the Pd3Y.

关 键 词：钯合金 透氢速率 有序无序转变 

分 类 号：TG146.36[一般工业技术—材料科学与工程]