Effects of Zircon Additive on the Properties of 95-Alumina Ceramic
The mechanism of the effect that zircon additive had on the properties of 95-alumina ceramic was studied and compared with that of zirconia additive. The results show that zircon additive can decrease the sintering temperature of 95-alumina ceramic, the suitable content of zircon additive is 3% and the suitable sintering temperature is1630°C; under these conditions, the 95-alumina composite ceramic can obtain satisfactory sintering and mechanical properties. Compared with zirconia additive, besides the stress-induced-phase-transformation of ZrO2 and micro-cracks, the toughened mechanism of 95-alumina ceramic with zircon additive also includes zirconia secondary crystallization in the liquid phase.
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
B. J. Cheng et al., "Effects of Zircon Additive on the Properties of 95-Alumina Ceramic", Key Engineering Materials, Vols. 280-283, pp. 1013-1016, 2005