Influence of CeO_2 Doping on Property of SnO_2 Ceramics

摘要

The tin dioxide ceramics were prepared by the traditional solid phase sintering method. Influence of different CeO_2 doping amount on the microstructure, electrical resistivity and density of the tin dioxide ceramics by SEM and XRD and other analytical instrument. The relationship between composition, properties and structure were obtained. The results showed that when CeO_2 doping amount increased, the electrical resistivity of tin dioxide ceramics decreased firstly and then increased, the density of tin dioxide ceramics increased. When sintered temperature was 1430°C and the doping amount of CeO_2 was 0.7wt.%, the properties of tin dioxide ceramics was good, crystal growth was most complete, the electrical resistivity was 966.68 mΩ-cm and the density was 5.72g/cm~3.