Sintering Behavior of Pure and Nb-Doped BaTiO3 Powder Prepared by High-Gravity Reactive Precipitation
Sintering behavior of pure and Nb-doped barium titanate powders prepared by high-gravity reactive precipitation (HGRP) process was investigated. A thermal dilatometer was employed to monitor the sintering shrinkage continuously during sintering. TEM and SEM were used to characterize the microstructures of the samples. The experimental results confirmed that Nb-doped BaTiO3 ceramics sintered at 1220°C for 2 h reached a larger densification of 97.0% relative density compared with 94.6% of pure BaTiO3 ceramics sintered at 1265°C for 2 h, and Nb-doped BaTiO3 ceramics had a smaller grain size (1.2μm) than that of pure BaTiO3 ceramics (2μm).
Wei Pan and Jianghong Gong
X. H. Wang et al., "Sintering Behavior of Pure and Nb-Doped BaTiO3 Powder Prepared by High-Gravity Reactive Precipitation", Key Engineering Materials, Vols. 336-338, pp. 2293-2295, 2007