Abstract
Different contents of bismuth oxide doped in 3YSZ material and the mixed powder formed. After press forming,the samples were sintered at 850°C, 900°C, 1000°C and 1100°C respectively. The electrical properties,the thermal shock resistance,the phase components and the microstructure morphology were analyzed to study the solid solution mechanism of Bi2O3-Y2O3-ZrO2 three-phase system. It was found that the Bi2O3 can effectively reduce sintering temperature as a flux. Sintered at 1000°C, t-ZrO2 can be induced into m-ZrO2 by Bi2O3 doped. With the increasing of Bi2O3 content, system shock resistance decreases. The thermal shock resistance of the 2-3mol% Bi2O3-YSZ is the best. In the different content of Bi2O3 system, 3mol% doped materials has the highest conductivity.
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