Co含量对Pr_(10)Fe_(74-x)Co_(10+x)C_4B_4(x=0,2,4,6,8)快淬条带的磁性能的影响  

Magnetic Properties of Melt-Spun Nanocomposite Pr_(10)Fe_(74-x)Co_(10+x)C_4B_4(x=0,2,4,6,8) Ribbons

作　　者：刘光娟[1] 杜晓波[1] 荣传兵[1] 张绍英[1] 张宏伟[1] 沈保根[1] 

机构地区：[1]中国科学院物理研究所北京凝聚态物理国家实验室磁学实验室,北京100080

出　　处：《中国稀土学报》2005年第2期200-203,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目(10274102)

摘　　要：用快淬方法制备了Pr10Fe74-xCo10+xC4B4(x=0,2,4,6,8)条带,研究了成分和工艺对条带磁性能的影响。实验发现,当x=2,带速是20m·s-1时,条带的磁性能最佳,其剩磁Jr=0.94T,矫顽力μ0iHc=0.96T,最大磁能积(BH)max=127.32kJ·m-3。通过Henkel plot分析,发现x=2,带速为20m·s-1的样品中的晶间交换作用最强,因而能获得最佳的磁性能。Phase evolution and magnetic properties of melt-spun Pr_(10)Fe_(74-x)Co_(10+x)C_4B_4 (x=0,2,4,6,8) alloy ribbons were investigated. Increasing the Co content is found to promote the generation of the 2∶14∶1 phase, which results in a significant increase of coercivity and remanence. The proper Co substitution strengthens intergranular exchange coupling action among grains, and so leads to an obvious enhancement of remanence and energy product for the Pr_2Fe_(14)C/α-Fe type ribbons. A sample with the optimum values of (J_r=)0.94 T, ()_iH_c=0.96 T, (BH)_(max)=127.32 (kJ·m^(-3)), respectively is obtained in Pr_(10)Fe_(72)Co_(12)C_4B_4(i.e. (x=2)) ribbons.

关 键 词：纳米复合永磁体 矫顽力 剩磁 最大磁能积 稀土 

分 类 号：TM273[一般工业技术—材料科学与工程]