摘要
对铸态和快淬态贮氢合金Mm(NiCoMnAl) 5.1 B0 .1 的微观组织和电化学性能进行了研究。发现快淬态合金基本上消除了第二相 ,快淬合金组织中存在一定比例的非晶相 ,并且随着淬速增加非晶相的量增多 ;与铸态合金相比 ,快淬态合金的放电容量有所降低 ,但循环寿命显著提高 。
The difference on the microstructure and the electrochemical properties between the rapidly quenched and the as cast Mm(NiCoMnAl) 5.1 B 0.1 hydrogen storage alloy were investigated. It was found that rapid quenching eliminates the secondary phase in the as cast alloy. An amount of amorphous phase is formed in the quenched alloy. And the higher the quenching rate is, the more the quantity of amorphous phase is. The discharge capacity of the as quenched alloy is lower than that of as cast alloy, but the cycle life of the as quenched alloy is much longer than that of as cast alloy owing to formation of amorphous phase and crystal grain refinement.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2003年第6期726-729,共4页
Chinese Journal of Rare Metals
基金
国家自然科学基金重点项目 ( 5 0 13 10 40 )
国家自然科学基金资助项目 ( 5 0 0 710 5 0 )
关键词
快淬
贮氢合金
微观组织
电化学性能
rapidly quenching
hydrogen storage alloy
microstructure
electrochemical properties
