Self-propagating High-temperature Synthesis Of Al_2o_3/tic-based Ceramic Materials

摘要

Dense Al_2O_3/TiC composite ceramic materials are synthesized using the SHS compaction of mixtures based on TiO_2 + Al + C. Mineralizing and heating additives are introduced into compounds. The phase composition and microstructure of combustion products are investigated by x-ray phase analysis, electron microscopy, and microprobe techniques. Two Al_2O_3 modifications are revealed. Special attention is devoted to the presence of residual graphite. The mechanisms of phase formation and formation of the microstructure of combustion products are considered.