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Amorphous melt-spun ribbons of a Nd9Fe73Ti4C1B13 alloy were consolidated into bulk materials by the spark plasma sintering method. The resultant bulk material was amorphous when the ribbons were consolidated at 773K. The amorphous bulk material showed a low coercivity, as would be expected for amorphous Nd–Fe–B materials. On the other hand, the bulk materials produced at 873K and above consisted of α-Fe and Nd2Fe14B phases. The resultant nanocomposite magnets showed high coercivity values exceeding 10kOe. The bulk material produced at 973K showed a high remanence of 8.4kG with a maximum energy product of 13.8MGOe.
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Tetsuji Saito (2006) studied this question.
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