Zr对Nd_2Fe_(14)B/α-Fe快淬纳米复合永磁材料的影响  

Effects of Zr Element on Nd_2Fe_(14)B/α-Fe Melt-spun Nanocomposite Magnets

作　　者：王占勇[1] 周邦新[2] 倪建森[2] 徐晖[2] 

机构地区：[1]上海应用技术学院材料工程系,上海200235 [2]上海大学材料所,上海200072

出　　处：《河北工业大学学报》2006年第5期13-16,共4页Journal of Hebei University of Technology

基　　金：国家"863"高技术研究发展计划(2002AA302602-2);上海市科学技术发展基金纳米专项(0552nm049)

摘　　要：主要研究了Zr对Nd2Fe14B/Fe快淬纳米复合永磁材料的影响.研究发现,Zr元素的添加提高了快淬薄带的非晶热稳定性,晶化处理后的矫顽力和磁滞回线的方形度.三维原子探针分析发现,快淬薄带晶化后Zr在硬磁性相内部以及晶粒之间分布不均匀,有利于细化晶粒、提高的矫顽力以及改善磁滞回线的矩形度.Effects of Zr element on Nd2Fe14B/α-Fe melt-spun nanocomposite magnets have been investigated. The stability of as-spun amorphous ribbons was enhanced for the addition of 2.6at% Zr element, As-spun ribbons with Zr addition have lower activation energy and can be crystallized at the higher temperature and in a narrow temperature region, inducing fine and uniform microstructure and enhancing the coercivity and squareness of hysteresis loop. The results of three dimensional atom probe （3DAP） reveals that Zr atoms distribute unhomogeneously in Nd2Fe14B phase and between boundaries of grains.

关 键 词：纳米复合磁性材料 晶化 3DAP 添加Zr 

分 类 号：TM273[一般工业技术—材料科学与工程]