Preparation and microstructure of AlOTiC composites by self-propagated high temperature synthesis

Abstract

This investigation was concerned with the production of ceramic composites based on AlOTiC by means of self-propagated high temperature synthesis. When titanium and carbon black mixed with AlO powder reacted, the ignition and adiabatic temperature showed a dependence on the reactant mixture composition and the amount of precompaction. The effects of these parameters on the product morphology are presented. Conditions under which the reaction ceased to self-propagate are also identified. The reaction mechanism for the reaction between TiO, Al and carbon black is also discussed. The microstructures of the products from the two reactions are compared