Combustion Synthesis of Alumina-Based Multiphase Foam Ceramic
Al2O3-TiO-TiO2 multiphase foam ceramic was prepared with Al powders and TiO2 powders by combustion synthesis, Direct observation and metallographic microscope indicated that the pore diameter is 100~6000μm, and Archimedean method showed that the porosity is 35~50%. The influencing factors of the pore diameter and porosity and, the effects of adding SiO2 on compression strength of the Al2O3- TiO-TiO2 multiphase foam ceramic were discussed. It was shown that the addition of proper high temperature foaming agent can increase porosity and adding SiO2 can decrease porosity. The Al2O3-TiO-TiO2 multiphase foam ceramic has good mechanical properties and high-temperature resistance.
Wei Pan and Jianghong Gong
J. S. Li et al., "Combustion Synthesis of Alumina-Based Multiphase Foam Ceramic", Key Engineering Materials, Vols. 368-372, pp. 1526-1528, 2008