回热材料Er_3Ni的氢化反应及其产物分析  

Analysis of hydrogenation of regenerative material Er_3Ni and its reaction product

作　　者：李聪航[1] 金滔[1] 汤珂[1] 陈立新[2] 

机构地区：[1]浙江大学制冷与低温研究所,杭州310027 [2]浙江大学材料科学及工程学系,杭州310027

出　　处：《低温工程》2010年第5期29-32,共4页Cryogenics

基　　金：国家自然科学基金项目(50776075);中央高校基本科研业务费资助项目(2009QNA4008)

摘　　要：回热材料Er3Ni的吸氢反应及其产物热物性可能是影响脉管制冷机性能的因素之一。研究了Er3Ni在不同活化条件下的氢化反应特性,通过反应过程的比较和氢化产物的分析,阐明了氢化反应前对Er3Ni进行的活化处理方法对Er3Ni的氢化反应过程及其产物特征所带来的影响。结合Er3Ni吸氢p-c-T曲线的测定,提出了两条制取不同含氢量Er3NiHx的技术路线。Hydrogenation of regenerative material Er3Ni and the properties of its product Er3NiHx were considered as one of possible factors for influencing the refrigeration performance of a pulse tube cryocooler.The hydrogenation characteristics under different activation conditions were investigated.The influence of activation methods on Er3Ni hydrogenation process and its hydrides was presented by comparing the reaction process and analyzing the corresponding reaction products.Combined with the measurement of the p-c-T curve for hydrogen absorbing process,two technical routes were proposed for preparing Er3NiHx with different hydrogen content.

关 键 词：磁性回热材料 Er3Ni 氢化反应 活化 

分 类 号：TB34[一般工业技术—材料科学与工程] TB66