We have studied solid-state compatibility in the Bi2O3–TiO2–Bi2WO6 ternary system. Based on previously reported data, we prepared different compositions and calcined them in air at 850°C. The crystalline phases and the microstructures were analyzed using X-ray diffraction and scanning electron microscopy. The results allowed us to determine seven new compatibility triangles: Bi2O3–Bi12TiO20–Bi14W2O27, Bi12TiO20–Bi4Ti3O12–Bi14W2O27, Bi4Ti3O12–Bi6Ti3WO18–Bi14W2O27, Bi6Ti3WO18–Bi10Ti3W3O30–Bi14W2O27, Bi10Ti3W3O30–Bi2WO6–Bi14W2O27, Bi6Ti3WO18–Bi10Ti3W3O30–Bi6Ti5WO22, and Bi2WO6–Bi10Ti3W3O30–Bi6Ti5WO22. The existence of the Bi4WO9 phase, as reported in the Bi2O3–WO3 binary system, could not be confirmed. The Bi4Ti3WxO12+3x (x≤0.05) solid solution was detected and, therefore, the Bi4Ti3O12–Bi2Ti4O11–Bi6Ti3WO18 compatibility triangle was corrected to include two-phase fields.
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Document Type: Research Article
Department of Electroceramics, Instituto de Cerámica y Vidrio (CSIC), 28049 Madrid, Spain
Department of Ceramics, Instituto de Cerámica y Vidrio (CSIC), 28049 Madrid, Spain
Advanced Materials Department, Jožef Stefan Institute, 1000 Ljubljana, Slovenia
Publication date: January 1, 2008