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The mechanism of synthesis of titanium nitride by self-sustaining reactions

Published online by Cambridge University Press:  31 January 2011

S. Deevi  and
Z. A. Munir
S. Deevi
Affiliation:
Division of Materials Science and Engineering, University of California, Davis, California 95616
Z. A. Munir
Affiliation:
Division of Materials Science and Engineering, University of California, Davis, California 95616
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Abstract

The mechanism of formation of titanium nitride by the self-propagating high-temperature synthesis was investigated. Samples were quenched in liquid argon at different stages of the reaction and analyzed by x-ray diffraction and electron microprobe methods. A mechanism is proposed in which the propagation of the reaction wave results in the formation of a thin surface layer of TiN and an unsaturated solid solution. The layer then dissolves to form a solid solution of nitrogen in titanium and then re-forms with continued reaction. On the basis of phase equilibria and diffusion information, an analysis is made in which the feasibility of the proposal mechanism is demonstrated.

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Articles
Information
Journal of Materials Research , Volume 5 , Issue 10 , October 1990 , pp. 2177 - 2183
Copyright
Copyright © Materials Research Society 1990

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