Sm在Ni54Mn21Ga24.5合金中的存在形式  

Existing Form of Sm in Ni_(54)Mn_(21)Ga_(24.5) Alloy

作　　者：吴双霞[1] 韩莉[2] 黄继民[2] 郝宏波[1] 张光睿[1] 赵增祺[1] 

机构地区：[1]包头稀土研究院,内蒙古包头014030 [2]瑞科稀土冶金及功能材料国家工程研究中心,内蒙古包头014030

出　　处：《稀土》2008年第5期85-87,共3页Chinese Rare Earths

基　　金：国家自然科学基金项目资助(50561001)

摘　　要：制备了多晶合金Ni54Mn21Ga25和Ni54Mn21Ga24.5Sm0.3。通过XRD分析了合金的相组成,运用SEM观察了合金的微观组织、第二相形貌;通过EDAX对第二相化学成分进行了定性、定量分析。结果表明,Sm极小部分固溶在基体中,大部分以富Sm的第二相存在,一部分富集在晶粒的晶界处,呈断续网络状分布,还有一部分分布在晶粒内部。Ni54Mn21Ga25 and Ni54Mn21Ga24.5Sm0.3 used as compared alloy were prepared.Phase analysis,microstructure and morphology of second phases were investigated by XRD and SEM.The component of second phases was analyzed by EDAX.The results show that small amount of Sm resolved in matrix of solid solution,some accumulates along the grain boundaries with the discontinuous networks and other distributes in the grains with the fine particles.

关 键 词：NI2MNGA 稀土 能谱分析 

分 类 号：TG139.6[一般工业技术—材料科学与工程] O614.33[金属学及工艺—合金]