Development of high performance Pr2(Fe, Co)14B/α-(Fe, Co)-type nanocomposite ribbons by Co/Ti/C substitution
Pr-lean and boron enriched Pr9Febal. COxTiyB11-zCz (x=0, 10; y=0,2. 5 and 4; z=0-11) alloys have been employed in melt spinning to develop high coercivity and high magnetic energy product nanocomposite ribbons. Increase in C substitution in Co-free Pr9Febal Ti2.5 B11-zCz (z=0-11) ribbons degrades Br, iHc and (BH)max monotonically. However, in higher Ti content Pr9Febal. Ti4B11-zCz ribbons, a slight substitution of C for B (z=0.5-1) is beneficial in simultaneously improving the coercivity and magnetic energy product. Further substitution of 10 at.％ Co for Fe may improve not only the magnetic properties but also the temperature coefficient of remanence and the temperature coefficient of coercivity, which are mainly the results of the enhanced magnetization of both magnetically soft and hard phases and the refined microstructure. Optimum magnetic properties of Br=10.0kG, iHc=10.5kOe, (BH)max=20.2MGOe and α=-0.092％℃-1, β=-0.504％℃-1 could be achieved in Pr9Fe66Co10Ti4B10C1 ribbons.
C H Chiu C H Chen C W Chang W C Chang H W Chang
Physics Department, National Chung Cheng University, Ming-Hsiung, Chia-Yi, Taiwan Institute of Physics, Academia Sinica, Nankang, Taipei, Taiwan
国际会议
第二届功能原料国际研讨会(The 2rd International Symposium on Functional Materials)
杭州
英文
127-131
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）