第四组元对机械合金化MgNiCu合金贮氢性能的影响  

Study of Effect of Fourth Elements on Hydrogen Storage Characteristics of MgNiCu Alloys

作　　者：李金平[1] 王晓林[1] 王尔德[1] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001

出　　处：《材料科学与工艺》1998年第2期69-73,共5页Materials Science and Technology

摘　　要：采用机械合金化方法由Mg,Ni和Cu单质粉末以及添加第四组元粉末按选定比例合成MgNiCu和MgNiCu-M5％贮氢材料.着重研究了分别添加不同的第四组元Al、Mn、Ti元素对不同球磨时间后MgNiCu合金贮氢性能的影响。结果表明，添加第四组元都不同程度地改善了MgNiCu合金的初始活化条件;添加Mn能降低MgNiCu合金的吸放氢平台，显著改善其吸放氢动力学性质;添加Ti提高了MgNiCu合金的最大贮氢量，也改善了其吸放氢动力学性质;添加Al几乎不改变MgNiCu合金的贮氢性能。From ixed Mg,Ni,Cu element powders and the fourth addition element powder at a determined ratio,MgNiCu and MgNiCu-5wt%M hydrogen storage alloys were made by mechanical alloying.The paper studies how each the fourth addition element Al,Mn or Ti influences the hydrogen storage characteristics of MgNiCu alloys and results show that all the fourth elements could improve the initial activation condition of MgNiCu alloys to a varying degree Mn addition lowers hydriding and dehydriding plateaux and remarkably improves hydriding and dehydriding kinetics of MgNiCu alloys,Ti addition increases the maximum storage capactities and improves hydriding and dehydriding kinetics of MgNiCu alloys,and Al addition does not nearly improve hydrogen storage characteristics of MgNiCu alloys.

关 键 词：机械合金化 第四组元 贮氢性能 镁镍铜合金 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG139.7[金属学及工艺—金属材料]