Coercivity and Microstructures in Pr–Fe–B–M Cast Alloys (M=Cu/Ga/Ag/Al/In/Pb)

N. Takahashi; H. Nakamura; C. R. Paik; S. Sugimoto; M. Okada; M. Homma

doi:10.2320/matertrans1989.32.90

N. Takahashi, H. Nakamura, C. R. Paik, S. Sugimoto, M. Okada, M. Homma

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Keywords: Pr–Fe–B–M cast alloys, coercivity, eutectic temperatures, annealing ingots

JOURNAL FREE ACCESS

1991 Volume 32 Issue 1 Pages 90-92

DOI https://doi.org/10.2320/matertrans1989.32.90

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Abstract

The present work describes the relationships between coercivity and microstructures of Pr₁₇Fe_77.5B₄M_1.5 (M=Cu, Ga, Ag, Al, In and Pb) cast alloys. The addition of Cu, Ga and Ag to the alloys lowers the melting point of the Pr-rich phase as a result of eutectic phase formation. This increases the coercivity of the cast annealed alloys. Especially, annealing the alloys with Cu, Ga and Ag at 723 K further enhances the coercivity up to 732 kA/m.

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