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Diffraction study of thermal dissociation of Ti3AlC2 in vacuum

Conference Paper


Abstract


  • Titanium aluminum carbide exhibits a unique combination of characteristics of both metals and ceramics coupled with an unusual combination of mechanical, electrical and thermal properties. In this paper, the effect of high-vacuum annealing on the phase stability and phase transition of Ti3AlC2 at up to 1550°C was studied using in-situ neutron diffraction. The decomposition of Ti3AlC2 into TiC was observed from the change of relative phase abundances as a function of temperature. The apparent activation energies of phase decomposition was determined to be -71.9 kJ/mol. Near-surface composition depth profiling using grazingincidence synchrotron radiation diffraction has revealed a graded phase composition in vacuum-decomposed surfaces.

Publication Date


  • 2009

Citation


  • Pang, W. K., & Low, I. M. (2009). Diffraction study of thermal dissociation of Ti3AlC2 in vacuum. In 11th International Conference and Exhibition of the European Ceramic Society 2009 Vol. 1 (pp. 71-73).

Scopus Eid


  • 2-s2.0-84879026885

Web Of Science Accession Number


Start Page


  • 71

End Page


  • 73

Volume


  • 1

Abstract


  • Titanium aluminum carbide exhibits a unique combination of characteristics of both metals and ceramics coupled with an unusual combination of mechanical, electrical and thermal properties. In this paper, the effect of high-vacuum annealing on the phase stability and phase transition of Ti3AlC2 at up to 1550°C was studied using in-situ neutron diffraction. The decomposition of Ti3AlC2 into TiC was observed from the change of relative phase abundances as a function of temperature. The apparent activation energies of phase decomposition was determined to be -71.9 kJ/mol. Near-surface composition depth profiling using grazingincidence synchrotron radiation diffraction has revealed a graded phase composition in vacuum-decomposed surfaces.

Publication Date


  • 2009

Citation


  • Pang, W. K., & Low, I. M. (2009). Diffraction study of thermal dissociation of Ti3AlC2 in vacuum. In 11th International Conference and Exhibition of the European Ceramic Society 2009 Vol. 1 (pp. 71-73).

Scopus Eid


  • 2-s2.0-84879026885

Web Of Science Accession Number


Start Page


  • 71

End Page


  • 73

Volume


  • 1