Preparation of rare earth - transition metal (RE: Y, Tm: Co) intermetallic compounds by calciothermic reduction diffusion process

Authors

  • M. Ilayaraja
  • L. John Berchmans
  • Sankara Raman Sankaranarayanan

DOI:

https://doi.org/10.5937/metmateng1401023L

Keywords:

Calciothermic reduction process (CRD), Intermetallics, Rare earth Cobalt alloys, Gibbs free energy

Abstract

Rare earth cobalt alloys have many special magnetic properties and can be used to prepare magnetic and magneto-optical components. The yttrium - cobalt intermetallic compounds are prepared by calciothermic reduction - diffusion (CRD) process at temperature of 1000 ºC, under argon atmosphere. Yttrium oxide, metallic cobalt powder, metallic calcium are used as raw materials in this process. Calcium acts as the reductant, which is used to prepare the YCo5 magnetic material. XRD, SEM, EDAX and some thermodynamic valuation have been carried out on the products. The chemical reactions controlled by unreacted core model theory were studied.

 

http://dx.doi.org/10.5937/metmateng1401035I

References

S.R. Trout, Permanent Magnets based on the Lanthanides, www.Spontaneousmaterials.com.

T.S. Krishnan, Bulletin of Materials Science, Vol 2, Number 3, August 1980, pp.161-165.

Guangsi Guo, Guangqiang Li, and Liang Liu, J. Mater. Sci. Technol., Vol. 16, No. 2, 2000, 181-182.

Guangsi Guo, Guangtai Wang, and Zhitong Sui, J. Mater. Sci. Technol., Vol. 20, No. 1, 2004, 68-70.

A. Ghosh, Text of Materials and Metallurgical Thermodynamics, 3rd printing, PHI Learning Private Limited, 2009.

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Published

2014-03-31

How to Cite

Ilayaraja, M., L. John Berchmans, and Sankara Raman Sankaranarayanan. 2014. “Preparation of Rare Earth - Transition Metal (RE: Y, Tm: Co) Intermetallic Compounds by Calciothermic Reduction Diffusion Process”. Metallurgical and Materials Engineering 20 (1):35-40. https://doi.org/10.5937/metmateng1401023L.

Issue

Vol. 20 No. 1 (2014)

Section

Articles - archived

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