纳米晶复合Nd_(9.5)Fe_(81-x)Co_xZr_3B_(6.5)永磁材料磁性能的研究  

Study on the magnetic properties of the nanocomposite Nd_(9.5)Fe_(81-x)Co_xZr_3B_(6.5) alloys

作　　者：沙辉[1] 徐晖[1] 倪建森[1] 张士岩[1] 王海龙[1] 王占勇[1] 

机构地区：[1]上海大学材料研究所,上海200072

出　　处：《功能材料》2006年第4期549-551,共3页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2002AA302602-2);上海市青年科技启明星资助项目(03QF14018)

摘　　要：采用熔体快淬及晶化退火工艺制备了Nd9.5Fe81-xCoxZr3B6.5(x=0、2、5、8、10)纳米晶合金条带,研究了Co的添加对快淬合金磁性能和居里温度的影响。结果表明,适量Co元素的添加能够有效降低各相晶粒的尺寸,增强了软、硬磁相晶粒的交换耦合作用,从而提高了合金的磁性能。Co含量为5%(原子分数)的合金,经670℃/4min的晶化处理后所得到的最佳磁性能为`Br=0.90T,jHc=588kA/m,(BH)max=117kJ/m3。Nd9.5Fe81-xCoxZr3B6.5 （x= 0,2,5,8,10） ribbons were prepared by melt-spun and subsequent annealing. The influence of cobalt additions on the magnetic properties of the alloys was investigated. The results suggested that adding proper cobalt could decrease grain size of the crystalline phase and increase the magnetic properties of the alloys. When Co=5at%, the optimum magnetic properties of the alloys were obtained. Br=.90T,jHc=588kA/m,（BH）max=117kJ/m^3.

关 键 词：纳米晶双相 居里温度 磁性能 

分 类 号：TM273[一般工业技术—材料科学与工程]