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

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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.

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Authors and Affiliations

  1. State Key Laboratory for Rapidly Solidified Alloys, Institute of Metal Research, Chinese Academy of Sciences, 110015, Shenyang, People’s Republic of China

    T. M. Zhao, X. R. Xu & Z. Q. Hu

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  1. T. M. Zhao
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  2. X. R. Xu
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  3. Z. Q. Hu
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Correspondence to T. M. Zhao.

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Zhao, T.M., Xu, X.R. & Hu, Z.Q. Effect of Ti + C addition on quenchability and magnetic properties of Nd9Fe85B6. Journal of Materials Research 14, 3257–3262 (1999). https://doi.org/10.1557/JMR.1999.0440

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