Journal of Materials Science

, Volume 26, Issue 12, pp 3343–3353 | Cite as

Self-propagating high-temperature synthesis of molybdenum disilicide

  • S. C. Deevi
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Abstract

Molybdenum disilicide was synthesized from elemental reactants in argon and vacuum atmospheres by utilizing the exothermicity of the reaction using self-propagating high temperature synthesis. Experiments were carried out using powdered reactants and compacts with varying densities. The reaction front propagated at a finite velocity depending upon the atmosphere, the diameter of the pellet and the particle sizes of the reactants. The exothermicity of the reaction between molybdenum and silicon raised the temperature of the product to 1886 K, which is close to the theoretical adiabatic combustion temperature, 1900 K. X-ray diffraction analysis of the product confirmed the product to be a single phase MoSi2 crystallizing in a tetragonal structure. Microstructural examination revealed melting of Si and its capillary flow, and chemical analysis indicated that the product is much purer than the reactants.

Keywords

Combustion Temperature Combustion Wave Combustion Synthesis Combustion Velocity Reaction Front 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Chapman and Hall Ltd. 1991

Authors and Affiliations

  • S. C. Deevi
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of CaliforniaDavisUSA

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