摘要
研究了xTi-18Mn-(50–x)Cr-32V(x=36,34,32,30,28)合金的吸/放氢性能。结果表明:随Ti/Cr比值的减小,合金的晶格常数和晶胞体积减小,这虽然导致合金的最大吸氢量降低,但是合金的有效放氢量增大,且合金PCT曲线的滞后系数降低。合金(110)面法线方向上晶粒尺度的大小是影响合金放氢平台斜率系数的因素之一。对于32Ti-18Mn-18Cr-32V合金,在273K吸氢、353K放氢的条件下,有效放氢量达到1.72%(质量分数),具有实用价值。
The hydrogen absorption/desorption performance of xTi-18Mn-（50-x）Cr-32V （x=36, 34, 32, 30, 28） alloys were studied. It is found that with the increase of Ti/Cr ratio, both of the lattice constant and the unit cell reduce, which results in the enhancement of effective hydrogen desorption capacity （Cc） and the decrease of hysteresis of the PCT plateau. Crystal grain size along the normal direction of the （110）, is one of the important factors affecting the slope factor. In the case of 32Ti-18Mn-18Cr-32V alloy, Ce reached about 1.72 wt%, which is useful for a practical application.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第10期1593-1596,共4页
Rare Metal Materials and Engineering
基金
上海自然科学基金(04ZR14155)
国家高技术研究发展计划(863计划)资助(2003AA515022)
关键词
储氢合金
有效放氢量
滞后系数:斜率系数
hydrogen storage alloy
effective hydrogen desorption capacity
hysteresis factor
slope factor
