Sm-Co-Fe合金的微观组织及相转变研究  

Microstructures and Phase Transformation of the Sm-Co-Fe Alloys

作　　者：刘佩佩 李林[1,2] 杜玉松[1,2] LIU Peipei;LI Lin;DU Yusong(School of Materials Science and Engineering,Guilin University of Electronic Technology,Guangxi Guilin 541004,China;Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guangxi Guilin 541004,China)

机构地区：[1]桂林电子科技大学材料科学与工程学院,广西桂林541004 [2]桂林电子科技大学广西电子信息材料构效关系重点实验室,广西桂林541004

出　　处：《电工材料》2023年第4期7-12,共6页Electrical Engineering Materials

基　　金：广西信息材料重点实验室(211007-Z)。

摘　　要：稀土Sm-Co永磁材料由于具有良好的热稳定性和耐腐蚀性在航空航天和军工等行业有广泛的应用。在其中添加Fe、Cu、Ti和Zr等合金元素会影响其微观组织结构与相组成,使合金的磁性能发生改变。通过合金熔炼Sm_(10.5)(Co_(1-x)Fe_(x))_(89.5)(x=5~35)铸态合金,采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)和热分析(DSC)表征手段对Sm10.5(Co_(1-x)Fex)89.5铸态合金的凝固组织结构以及相转变温度进行分析。结果表明:添加了Fe元素的Sm-Co基合金的微观组织为S_(m2)(Co,Fe)_(17)及fcc(Co,Fe)相,随着Fe元素的增多,fcc(Co,Fe)相逐渐增多,当Fe含量达到30%时达到峰值,随后开始下降;通过对合金热分析曲线的测定,分析得出Sm_(10.5)(Co_(1-x)Fe_(x))89.5在不同x含量下相转变过程。Sm-Co permanent magnet materials have been widely used in aerospace and military industries due to their good thermal stability and corrosion resistance.The addition of Fe,Cu,Ti and Zr will affect the microstructure and phase composition of the alloy,and thus change the magnetic properties of the alloy.S_(m10.5)(Co_(1-x)Fe_(x))_(89.5)(x=5-35)as-cast alloy was smelted.The solidification microstructure and phase transition temperature of S_(m10.5)(Co_(1-x)Fe_(x))_(89.5) as-cast alloy were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS)and thermal analysis(DSC).The results show that the microstructure of Sm-Co alloy with Fe element is S_(m2)(Co,Fe)17 and fcc(Co,Fe)phase.With the increase of Fe element,fcc(Co,Fe)phase increases gradually,and reaches the peak value when Fe content reaches 30%,and then begins to decrease.The phase transformation process of S_(m10.5)(Co_(1-x)Fe_(x))_(89.5) under different x content was obtained by measuring the thermal analysis curve of the alloy.

关 键 词：稀土永磁材料 Sm-Co-Fe合金 微观组织 相转变 

分 类 号：TM273[一般工业技术—材料科学与工程]