FABRICATION AND THERMAL PERFORMANCE RESEARCH OF Al_(2(1-x))Mg_xTi_(1+x)O_5
The thermal performance of AT with additive MgO·2TiO 2 was studied in order to restrain the decomposition of AT. The solid solutions Al 2(1- x ) Mg x Ti 1+ x O 5( x =0,0.01,0.05,0.1,0.3)were fabricated by a solid state reaction method. The solid solution powders were sintered under the normal pressure. The relation of x values and the components and thermal performance of the solid solution was investigated. The results indicate that with the augment of the x values the crystal lattice constants and thermal stability increased. When x value is 0.05 the compositional fraction of AT is only 9% at the temperature of 1 100 ℃ for ten hours. Finally, thermal expansion of the sintered specimens was studied.