Study on the Second Phases of (Y,Nb)-Codoped TiO₂ Ceramic

Abstract

Microstructures and crystal structures of the second phases YNbO4 and YTiNbO6 in (Y,Nb)-codoped TiO2 ceramics were investigated at different sintering temperature and calcination temperature. The (Y,Nb)-codoped TiO2 ceramics and the second phase ceramic samples were prepared by the traditional electronic ceramic process. The microstructure, chemical composition and crystal structures of samples were characterized by SEM, EDS and XRD. The results show that there exist second phases of YNbO4 and YTiNbO6 in (Y,Nb)-codoped TiO2 ceramic. With the sintering temperature and calcination temperature rising, the second phase YNbO4 will transmit to YTiNbO6.