Combustion synthesis of TiB2 ceramics powder from B2O3-TiO2-Mg system in air atmosphere

TiB2 ceramics powder was sYnthesized from B2Ox-TiO2-Mg system. The effects of TiB2 addition ion diluent on the combustion synthesis process were investigated. The results of the thermodynamic calculation and experiments show that the increase of TiB2 content ranging from 0 to 20wt% can reduce the adiabatic temperature T-ad from 3100 K to 2896 K and combustion temperature T-c, from 2139 K to 1621 K respectively. The particle size and half width of the particle distribution are also increased with the addition of TiB2 increasing from 0 to 20wt%. The combustion product is a mixture of TiB2 (.) MgO, and other intermediate phases, The leached product contains mainly TiB2, TiO2, and TiN, and its oxygen content is 7.77wt%.