对V55Ti20.5Cr18.1Fe6.4(原子分数,下同)贮氢合金进行了155次吸放氢循环性能实验研究.结果表明:随循环次数的增加,合金吸放氢量减小,放氢量的衰减呈减缓趋势,放氢平台区缩短,平台压力增大,合金表面有影响吸放氢性能的化合物生成,合金结构呈bcc与fcc的双相结构,合金颗粒由于微裂纹的不断累积而逐渐粉化.
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