【摘要】 研究了热处理对欠化学计量Ti Mn基贮氢合金性能及组织结构的影响。研究表明 ,热处理提高了合金的贮氢量 ,拓宽了合金P C T曲线平台 ,但增加了平台斜率。通过扫描电镜能谱分析及X射线衍射分析发现 ,热处理增大了合金相的晶格常数及单胞体积 ,同时有效地提高了合金成分的均匀性 ,减少了C15型Laves相在合金中的含量 ;而热处理后平台斜率的增大可能与合金的价电子 原子比有关更多还原

【Abstract】 Effects of heat treatment on the properties and microstructure of non stoichiometric Ti Mn based hydrogen storage alloys were investigated. The results show that the hydrogen storage capacity increases and the width of P C T plateau extends, but the slope of plateau increases. Through SEM, EDS and XRD analysis, it was found that the crystal parameters and cell volume increases, the composition homogeneity effectively enhances and the content of C15 phase decreases after heat treatment. The accretion of slope of plateau may be related to the ratio of valence electron/atom of the alloys.更多还原