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Effect of Ti + C addition on quenchability and magnetic properties of Nd9Fe85B6

Published online by Cambridge University Press:  31 January 2011

T. M. Zhao ,
X. R. Xu  and
Z. Q. Hu
T. M. Zhao*
Affiliation:
State Key Laboratory for Rapidly Solidified Alloys, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
X. R. Xu
Affiliation:
State Key Laboratory for Rapidly Solidified Alloys, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
Z. Q. Hu
Affiliation:
State Key Laboratory for Rapidly Solidified Alloys, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
*
a) Address all correspondence to this author.tmzhao@imr.ac.cn
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Abstract

Ingots of composition Nd9Fe85B6, Nd9Fe85B6 + 1 at.% (Ti + C), Nd9Fe85B6 + 2 at.% (Ti + C), and Nd9Fe85B6 + 5 at.% (Ti + C) were prepared by plasma arc-melting the constituent elements from 99.95 wt% Nd, 99.99 wt% Fe, 99.97 wt% Ti, spectrographic grade C, and ferroalloy Fe–B (19.6 wt% B). Effect of Ti + C addition and its content on quenchability and magnetic properties of Nd9Fe85B6 alloy were investigated by melt-spinning. The results showed that the added Ti and C elements reacted with each other to form TiC compound that was solid solutioned, precipitated, or both in the cast ingots. The Ti + C addition can increase the glass-forming ability (GFA) of an α–Fe/Nd2Fe14B–type nanocomposite permanent material: the more the additive, the stronger the GFA; but only approximately 2 at.% Ti + C addition could enormously increase the magnetic properties.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 8 , August 1999 , pp. 3257 - 3262
Copyright
Copyright © Materials Research Society 1999

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