CAJ | 학술논문

采用气体雾化工艺制备了RE(NiAlCu)5-x(x=0.1，0.5)两种微晶贮氢合金粉末，研究了粒度对合金粉末的微观组织结构及电化学性能的影响。结果表明：随着合金粉末粒度的减小，RE(NiAlCu)49合金的电化学容量降低，活化次数增加；而RE(NiAlCu)4 5合金的电化学容量及活化次数无显著变化。复相微结构的形成是导致以上合金粉末性能特性的主要因素。
채용기체무화공예제비료RE(NiAlCu)5-x(x=0.1，0.5)량충미정저경합금분말，연구료립도대합금분말적미관조직결구급전화학성능적영향。결과표명：수착합금분말립도적감소，RE(NiAlCu)49합금적전화학용량강저，활화차수증가；이RE(NiAlCu)4 5합금적전화학용량급활화차수무현저변화。복상미결구적형성시도치이상합금분말성능특성적주요인소。
New kinds of free-cobalt microcrystalline hydrogen-storage alloys powders with composition of RE (NiA1Cu)5-x(x = 0.1, 0.5) were produced by gas-atomization processing. The effects of particle size on mi-crostructure and electrochemical properties in the two alloys were investigated in detail. The results show it isshown that for RE (NiA1Cu)4.9 alloy with the decreasing particle size, the electrochemical capacity decreases and the number of activation increases. However, no distinct variations are obtained in the two parameters for RE (NiA1Cu)4.5 alloy. It is suggested that these properties of gas-atomized alloy are mainly ascribed to the for-mation of multi-phase structure of powders.