退火热处理对TiMn基储氢合金结构及性能的影响  

Effect of annealing on phase structure and performance of TiMn-based hydrogen storage alloy

作　　者：黄太仲[1] 吴铸[1] 黄铁生[1] 倪君[1] 余学斌[1] 喻献国[1] 徐乃欣[1] 

机构地区：[1]中国科学院上海微系统与信息技术研究所能源科学与技术研究室,上海200050

出　　处：《中国有色金属学报》2003年第1期91-95,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家"八六三"计划资助项目 (2 0 0 1AA5 15 0 2 2 )

摘　　要：通过压力组成温度曲线、放氢量测试及X射线衍射研究了退火热处理对TiMn基储氢合金结构及性能的影响。结果表明 ,退火热处理能明显改善储氢合金的活化性能 ,在一定程度上提高吸放氢性能 ,降低吸放氢反应的焓变。XRD分析表明 ,热处理后储氢合金的相组成由单一的γ TiMn12 转变为γ TiMn12The effect of annealing on phase structure and hydro ge n absorption/desorption property of TiMn-based alloy was studied by pressure-c omposition-temperature (PCT) curves, hydrogen desorption capacity and XRD anal ysis. The results show that the activation performance of this alloy is improved and the reaction enthalpy is reduced. XRD analysis show that phases of γ - TiMn 12 and hexagonal TiMn 5 coexist in the alloy instead of singl e γ -TiMn 12 after the heat treatment. The heat treatment can effectively improve the microstructure, activation property and hydrogen absorb ing capacity of TiMn-based hydrogen storage alloy.

关 键 词：TiMn基储氢合金 结构 性能 退火 热处理 

分 类 号：TG139.7[一般工业技术—材料科学与工程] TG146.23[金属学及工艺—合金]