Processing of compact materials by the use of self-propagating high-temperature synthesis and pseudo-hot isostatic pressing

Effects of additives on combustion synthesis of Al2O3–TiB2 ceramic composite

“…Due to the high melting point and high vapor pressure of the constituents, 7,8 the Al 2 O 3 -TiB 2 ceramic composite prepared by reactions (1) and (2) through the SHS route is porous, and a densification process is necessary to obtain dense materials. 9 However, the consolidation of the material into dense and high-strength is difficult because of the high degree of covalent bonding and low self-diffusion coefficient of the constituent elements. Relatively high densities are achieved only by pressure-assisted sintering procedures at temperatures higher than 1900 • C, i.e.…”