Numéro
J. Phys. IV France
Volume 03, Numéro C7, Novembre 1993
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
Page(s) C7-743 - C7-746
DOI http://dx.doi.org/10.1051/jp4:19937118
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés

J. Phys. IV France 03 (1993) C7-743-C7-746

DOI: 10.1051/jp4:19937118

Fabrication de carbure de titane par combustion auto-entretenue de titane et de carbone : initiation par diffusion à l'état solide

D. VREL, J.-M. LIHRMANN and J.-P. PETITET

CNRS-LIMHP, Institut Galilée, avenue J.-B. Clément, 93430 Villetaneuse, France


Abstract
Self-propagating high temperature synthesis of titanium carbide from finely divided powders of Ti and C is initiated in the solid state by diffusion at the contacts between particles. In the model of concentric spheres of titanium and carbon, the formation of TiC has been computerized as a function of graphite particles radius r(m), time t(s) and absolute temperature T(K). The reaction rate α (moles of carbon reacted relative to the initial amount of carbon) can be expressed by the relationship : [MATH]



© EDP Sciences 1993