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Magnetic properties and thermomagnetic analysis of a Fe-20Mo-5Ni-0.075C alloy

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Abstract

A Fe-20Mo-5Ni-0.075C (wt %) alloy for magnets was prepared by induction melting under vacuum. The material was hot rolled, solution treated and aged at 610°C for different periods of time. The magnetic properties (Hc, Br, Bs and (BH)max) were measured and compared with some commercial alloys containing cobalt. The precipitation of Mo-rich phases and the decrease of the ferrite lattice parameter during ageing were detected by X-ray diffraction. The thermomagnetic analysis (TMA) was carried out in the solution treated samples and aged samples. The behaviour of TMA curves was explained with the help of X-ray analysis.

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Authors and Affiliations

  1. Departamento de Engenharia Mecânica, Universidade Federal Fluminense (UFF), Brazil

    S. S. M. Tavares

  2. Departamento de Engenharia Metalúrgica e de Materiais, Universidade Federal do Rio de Janeiro (UFRJ), Brazil

    J. R. Teodósio

  3. Instituto de Física UFRJ, Brazil

    J. M. Neto

  4. Escola Federal de Engenharia de Itajubá (EFEI), Brazil

    M. R. Da Silva

Authors
  1. S. S. M. Tavares
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  2. J. R. Teodósio
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  3. J. M. Neto
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  4. M. R. Da Silva
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Tavares, S.S.M., Teodósio, J.R., Neto, J.M. et al. Magnetic properties and thermomagnetic analysis of a Fe-20Mo-5Ni-0.075C alloy. Journal of Materials Science 34, 4545–4550 (1999). https://doi.org/10.1023/A:1004601725270

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  • DOI: https://doi.org/10.1023/A:1004601725270

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