REACTION DYNAMIC PROCESS AND STRUCTURE FORMING PROCESS INSELFPROPAGATION HIGHTEMPERATURE SYNTHESIS OF TiCFe SYSTEM

The reaction dynamic process and structure forming process in SHS of TiCFe system were studied using Combustion Front Quenching method and heat analysis method. It was found in the SHS process of the system that Fe₂Ti comolten body was formed first, then carbon dissolved to it in high temperature and reacted with it to form TiCx with higher Ti content. After the main reaction carbon continued to react with TiCx through diffusion and formed the titanium carbide with a close stoichiometric ratio. The flow of molten metals resulted in agglomerates in the preheating zone. In the agglomerates small TiC particles were formed. In the period with high temperature after combustion wave the TiC particles continued growing to a larger size.