不同热处理条件对MATi_(65)Ni_(35)合金电化学行为的影响  

Influence of different heat treatment conditons on electrochemical behavior of MA Ti 65 Ni 35 alloy

作　　者：陈德敏[1] 汪根时[2] 周作祥[2] 宋德瑛[2] 牛广良[2] 

机构地区：[1]沈阳大学师范学院化学系 [2]南开大学

出　　处：《电源技术》1997年第1期18-21,共4页Chinese Journal of Power Sources

摘　　要：研究了两种真空热处理条件（６５３Ｋ，３．５ｈ和１２２３Ｋ，１ｈ）对用机械合金化（ＭＡ）法制得的Ｔｉ６５Ｎｉ３５非晶合金电化学行为的影响。发现低温热处理后的合金在较大的放电速率下仍然有比较大的容量，同时具有较长的寿命。用电化学方法测定了两种条件热处理后的合金比表面积，发现低温热处理后的合金具有较大的比表面积。认为两种条件热处理后的合金，其循环寿命的差别在于材料的膨胀程度和晶界数目的差别。The influence of two different vaccum heat treatment conditions(653K,3.5h and 1223K,lh) on the elecrochemical behavior of amorphous Ti 65 Ni 35 alloy prepared by mechanical alloying(MA) is investigated. It is found that Ti 65 Ni 35 alloy annealed at low temperature has larger discharge capacity even at larger discharge rate, and also has longer charge discharge cycle life. The specific surface of the alloy annealed under two different conditions is studied by electrochemical method. It is found that the alloy annealed at low temperature has larger specific surface. The difference of the cycle life between the alloy annealed under two conditions is attributed to the difference of the material expansion and the grain boundary numbers.

关 键 词：电池 Ti65Ni35合金 合金 热处理条件 电化学行为 

分 类 号：TM241[一般工业技术—材料科学与工程] TM911[电气工程—电工理论与新技术]