用铸造及快淬工艺制备了低钴AB5型Mm(NiCoMnAl)5BxBx=0～0.2)贮氢合金,测试了合金的微观结构及电化学性能,研究了B含量及快淬工艺的变化对合金晶格常数、热力学参数、微观结构及电化学性能的影响.结果表明:合金的晶格常数、晶胞体积及标准生成焓均随B含量的增加而增大;在一定的淬速范围内,快淬处理可以提高合金的放电容量,但淬速超过某一临界淬速时,快淬合金的容量低于铸态合金;合金的循环寿命随淬速的增加而单调增加.
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