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Phase formation in hypostoichiometric Sm<sub>2</sub>Fe<sub>17</sub> alloys modified with Ti and C

Authors
  • Shield, Jeffrey E.
  • Meacham, B.E.
Publication Date
Feb 15, 2000
Source
University of Nebraska - Lincoln
Keywords
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Abstract

The phase formation, crystallization products, microstructure, and magnetic behavior of Fe-rich Sm–Fe alloys modified with Ti and C have been determined. Alloys of nominal composition (Sm 0.11-xFe 0.89+x) 94Ti 3C 3 with x=0, 0.02, and 0.04 were produced by melt spinning. Crystalline phases observed included SmFe 7 and α -Fe and an increasing amorphous fraction was observed with increasing x. Upon crystallization the amorphous fraction converted to Sm2Fe17 and a-Fe, with a grain size of 30 nm for the sample with x=0.02. The magnetic measurements of nitrided alloys revealed a remanent ratio above 0.5 for x=0 and 0.02, although the coercivity was rather low.

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