摘要
采用机械合金化制备了Mg76-xVxTi12Ni12(x=4、8、12、16)合金,通过X射线衍射(XRD)、扫描电子显微镜(SEM)和压强-成分-温度(PCT)等分析方法对合金粉末进行分析和表征。结果表明,合金相主要由Mg2Ni相和Ti2Ni相组成,Mg76-xVxTi12Ni12(x=4、8、12、16)合金贮氢量(质量分数,下同)分别为3.71%、3.12%、2.85%和2.33%,随着V含量的增加,合金的贮氢量下降,合金氢化物释氢率分别为95.1%、97.1%、84.9%和94.4%,适量的V能提高合金氢化物的释氢率。
Mg76-xVxTi12Ni12（x=4,8,12,16） alloys were prepared by mechanical alloying. Hydrogen storage and microstructure of bail milled Mg76-x Vx Tit2 Nil2 （x = 4,8, 12, 16 ） alloys were investigated by X-ray diffraction, scanning electron microscope and presure-composition-isotherm measurement. Itwas found from XRD results that the main binary alloy phase consist of Mg2 Ni and Ti2 Ni. The hydrogen storage capacity of the Mg76-x VxTi12 NiTi2 （x= 4,8, 12,16） alloys were 3.71%, 3. 12 %,2. 85%and 2.33%, respectively. It decreased with the increasing of V content. The hydrogen desorption rate of Mg76-x Vs.Ti12 Nii2 （x= 4,8,12,16） hydride were 95. 1 %, 97.1 %, 84. 9 % and 94. 4 %. A appropriate of V content can improve hydrogen desorption rate of them.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2012年第6期110-113,共4页
Materials Reports
基金
国家自然科学基金(50561002
50861003)
广西自然科学基金重点项目(2010GXNSFD013004)
广西大学科研基金(XJZ100266)
关键词
Mg-Ti合金贮氢性能机械合金化
Mg-Ti alloy, hydrogen storage performance, mechanical alloying
