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Synthesis of neodymium aluminide by aluminothermic reduction of neodymium oxide

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Abstract

Neodymium aluminide was synthesized from Nd2O3 under vacuum by aluminothermic reduction in an induction furnace. Although the standard free energy change associated with the reduction of Nd2O3 by Al is positive, due to the formation reaction of the intermetallic compound, it was possible to drive the reaction in the forward direction in the presence of excess Al. An attempt was also made to reduce Nd2O3 by Al in the thermit process in the presence of the Fe2O3-Al thermit mixture so as to make the reaction self-sustaining. A comparison between these two processes was made with respect to the reduction of Nd2O3 by Al. Differential thermal analysis (DTA) was used to study the reaction process. The product was characterized by x-ray diffraction (XRD), x-ray fluoroscence (XRF), electron probe microanalysis (EPMA), and optical metallography (OM).

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Authors and Affiliations

  1. Materials Science Division, the Bhabha Atomic Research Centre, 400085, Mumbai, India

    A. Biswas (Scientific Officer), I. G. Sharma (Scientific Officer) & G. B. Kale (Scientific Officer)

  2. Uranium Extraction Division, the Bhabha Atomic Research Centre, 400085, Mumbai, India

    D. K. Bose (Head)

Authors
  1. A. Biswas
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  2. I. G. Sharma
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  3. G. B. Kale
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  4. D. K. Bose
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Biswas, A., Sharma, I.G., Kale, G.B. et al. Synthesis of neodymium aluminide by aluminothermic reduction of neodymium oxide. Metall Mater Trans B 29, 309–315 (1998). https://doi.org/10.1007/s11663-998-0107-x

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  • DOI: https://doi.org/10.1007/s11663-998-0107-x

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