Relations between Quenching Rate and Electrochemical Characteristics of Mm (NiCoMnA1) 5Bx (x=0～0.2) Electrode Alloys

作     者：Zhang Yanghuan 

作者机构：Dept. of Functional Mat. Res. Central Iron and Steel Res. Inst. Beijing 100081 China Sch. of Mat. Inner Mongolia Univ. of Sci. Baotou 014010 China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2004年第22卷第Z1期

页      面：235-241页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project supported by National Science Foundation of China (50131040) 

主　　题：AB5-type electrode alloy Electrochemical characteristics Low-Co Microstructure Rapid quenching 

摘      要：Low-Co AB5-type Mm(NiCoMnAl)5Bx(x=0, 0.1, 0.2) electrode alloys were prepared by casting and rapid quenching. The effects of the rapid quenching on the lattice constants, microstructures and electrochemical characteristics of the alloys were investigated in detail. The obtained results show that the rapid quenching made lattice constants and cell volume increased. In a range of the quenching rate, rapid quenching can increase the discharge capacities of the alloys. However, the discharge capacity of the as-quenched alloy is lower than that of the as-cast alloy when quenching rate is more than a critical value. The cycle lives of the alloys increase monotonously with the increase of the quenching rate.