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Microprobe and TEM investigations into samarium-cobalt magnets of the 1–7 type

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Abstract

The preparation of magnets with energy products of up to 30 MGOe from Sm(Co, Cu, Fe, M)z alloys with M=Ti or Zr and z=6.8 or 7.25, respectively, as well as their magnetic properties and microstructures have already been reported on. We describe, in addition, the distribution of the non-metallic impurities, O, N, and C, and the phases which they form with the metallic constiturents as found by electron beam micro analysis and transmission electron microscopy. Ti, Zr, and C combine in forming the very stable carbides TiC and ZrC. The possible role of these carbides in regard to the magnetic properties is discussed.

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Authors and Affiliations

  1. DECHEMA-Institut, D-6000, Frankfurt, Germany

    H. -E. Bühler

  2. Metallurgical Laboratory of Th. Goldschmidt AG, D-4300, Essen, Germany

    C. Herget & M. Velicescu

Authors
  1. H. -E. Bühler
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  2. C. Herget
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  3. M. Velicescu
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Bühler, H.E., Herget, C. & Velicescu, M. Microprobe and TEM investigations into samarium-cobalt magnets of the 1–7 type. Appl. Phys. 24, 211–214 (1981). https://doi.org/10.1007/BF00899758

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  • DOI: https://doi.org/10.1007/BF00899758

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