Zr在Mg_2Ni储氢合金中的作用  

Effect of Zr addition on hydrogen storage properties of Mg_2Ni alloy

作　　者：陈玉安[1,2] 郭庆[1] 黄华[1] 傅洁[1] 潘复生[1,2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]国家镁合金材料工程技术研究中心,重庆400044

出　　处：《材料热处理学报》2009年第5期10-13,共4页Transactions of Materials and Heat Treatment

基　　金：重庆市自然科学基金计划资助项目(CSTC;2006BB4197);重庆大学研究生科技创新基金项目(200701Y1A0040190)

摘　　要：采用感应熔炼法制备了Mg2Ni1-xZrx(x=0、0.2、0.4)合金,研究了Zr的添加对Mg系储氢合金储氢性能的影响。对合金的成分和微观组织进行分析,结果表明,Zr较难融入到合金,但是Zr能使得合金晶粒得到细化,且合金中都有Mg2Ni相的形成,有利于吸氢反应的进行。利用PCT测试仪测定了合金的储氢性能,结果表明:添加Zr元素的添加能有效降低Mg2Ni的吸放氢温度,并能有效提高提高合金的吸氢量,最高吸氢量达到4.91wt%。Mg-based hydrogen storage alloys Mg2 Ni1-x Zrx （ x = 0, 0.2, 0.4） were prepared by induction melting. Effect of Zr addition on hydrogen storage properties of the Mg-based hydrogen storage alloy was studied. The componsition and microstructure of the alloys were investigated by XRD and SEM/EDX. The results show that it is difficult to melt Zr into the alloys, but it makes grain refinement and formation of Mg2 Ni phase of the alloy to improve hydrogen absorption performance. The PCT results show that hydrogen absorption capacity is improved by Zr addition and the largest absorption capacity of the alloy is 4.91wt%, and the temperature of hydrogen absorption for the alloy decreases due to the addition of Zr.

关 键 词：感应熔炼 储氢性能 镁基储氢合金 

分 类 号：TG139.7[一般工业技术—材料科学与工程] TG146.2[金属学及工艺—合金]