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Hydrogen decrepitation as a method of powder preparation of a 2:17-type, Sm(Co, Cu, Fe, Zr)8.92 magnetic alloy

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Abstract

The present work has shown that hydrogen decrepitation of a 2:17-type Sm (Co0.673 Cu0.080Fe0.222Zr0.025)8.92 alloy is a very rapid and convenient means of producing powdered material for the production of polymer-bonded permanent magnets. The magnets made from the hydrogen decrepitated powder (average particle size ∼100μm) exhibited improved demagnetization loop shapes, higher intrinsic coercivities and improved elevated temperature stability when compared with the magnets produced from the standard milled powder material (average particle size ∼40μm). These differences in properties have been related to the differences in the character of the powders produced by the two methods of decrepitation.

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Authors and Affiliations

  1. Department of Metallurgy and Materials, University of Birmingham, PO Box 363, Birmingham, UK

    Abbas Kianvash & I. R. Harris

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  1. Abbas Kianvash
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  2. I. R. Harris
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Kianvash, A., Harris, I.R. Hydrogen decrepitation as a method of powder preparation of a 2:17-type, Sm(Co, Cu, Fe, Zr)8.92 magnetic alloy. J Mater Sci 20, 682–688 (1985). https://doi.org/10.1007/BF01026543

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  • DOI: https://doi.org/10.1007/BF01026543

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