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.
出处
《中国稀土学报》
CAS
CSCD
北大核心
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)
关键词
纳米复合永磁体
矫顽力
剩磁
最大磁能积
稀土
Pr_2Fe_(14)C/α-Fe
melt spinning
magnetic properties
coercivity
rare earths
