摘要
研究了 Ti0 .8Zr0 .2 Mn2 - x Crx(x=0 .2 ,0 .4,0 .6 ,0 .8和 1.0 )系、 Ti0 .9Zr0 .2 Mn1 .8V0 .2 和 Ti0 .9Zrx Mn1 .8- y Cry V0 .2 (x=0 .1,0 .15和 0 .2 ;y=0 .2和 0 .4)系 AB2 型 Ti- Mn基合金的储氢性能和晶体结构。结果表明 :Zr元素对 A侧 Ti的部分置换和 A侧过化学计量可显著提高合金的活化性能及吸放氢量。这些合金的主相均为 C14型 L aves相 ,其储氢量随点阵参数 a,c和晶胞体积 V的增加而提高 ,当 a≥ 0 .4894nm ,c≥ 0 .80 40 nm或 V≥ 0 .16 6 8nm3时 ,储氢量可达到 2 35 ml/g以上。
The hydrogen storage capacities and crystal structure of AB(2)-type Ti-Mn based alloys Ti0.8Zr0.2Mn2-xCrx(x = 0.2, 0.4, 0.6, 0.8, 1.0), Ti0.8Zr0.2Mn1.8V0.2 and Ti0.9ZrxMn1.8-yCryV0.2(x=0.1, 0.15,0. 2; y = 0.2, 0.4) have been studied. The results show that the substitution of Zr for Ti of the side A and stoichiomentric excess of the side A are effective on improving the activation and increasing the absorption-desorption hydrogen capacity. The hydrogen storage capacity increases monotonously with increasing the lattice parameters and unit cell volume. The hydrogen storage capacity of Ti-Mn based alloys can reach 235 ml/g for a greater than or equal to0.489 4 nm, c greater than or equal to0.804 0 nm, or V greater than or equal to0.166 8 nm(3).
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2001年第1期31-34,共4页
Rare Metal Materials and Engineering
基金
国家"863"高技术计划资助项目!(715 - 0 11- 0 10 )
