气体雾化贮氢电极合金Ml（Ni，Co，Mn，Ti）_5的活化性能  

ACTIVATION OF HYDROGEN-STORAGE ELECTRODE ALLOY Ml(Ni,Co,Mn,Ti)_5 PRODUCED BY GAS ATOMIZATION

作　　者：周煜[1] 雷永泉[1] 罗永春[1] 成少安[1] 王启东[1] 张永昌[1] 

机构地区：[1]北京大学,浙江大学,中国科学院金属研究所

出　　处：《金属学报》1996年第8期857-861,共5页Acta Metallurgica Sinica

摘　　要：研究了感应熔炼后随炉冷却和经不同处理的气体雾化贮氢电极合金Ｍｌ（Ｎｉ，Ｃｏ，Ｍｎ，Ｔｉ）_５的电化学活化特性．结果表明，氢化前后合金内能的变化是影响活化性能的原因．因表面覆盖氧化膜或任何其它原因所引起的附加内能越大，或氢化时氢原子进入四面体或八面体间隙位置所引起的应变能越大，活化越困难．The electrochemical activation behaviours of the hydrogenstorage electrode alloys Ml(Ni,Co,Mn,Ti)5 produced by induction melting and then fornace cooling (FC) or Ar-gas atomizing (AGA) have been studied by comparing the activation of AGA electrodes aged at room temperature for 4 months with that of FC electrode. It is found that the surface oxide is only a minor factor to affect the activation, while the magnitude of internal energy change in the alloy before and after hydrogenation is the controlling factor. The increases in the internal energy of the alloy, caused by oxide and the H-atoms entering tetrahedral or octahedral sites during hydrogenation, make the activation difficult.

关 键 词：贮氢电极合金 气体雾化 活化 贮氢合金 超声波 

分 类 号：TG139.7[一般工业技术—材料科学与工程]