Formation of Zirconia Titanate Solid Solution from Alkoxides |
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Authors: | Osamu Yamaguchi Hiroshi Mogi |
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Affiliation: | Department of Applied Chemistry, Faculty of Engineering, Doshisha University, Kyoto 602, Japan |
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Abstract: | In the system ZrO2–TiO2, ZrTiO4 solid solutions prepared by the simultaneous hydrolysis of zirconium and titanium alkoxides crystallize at low temperatures from amorphous materials between 30 and 70 mol% TiO2. As zirconium is substituted for titanium, the solid solutions can be indexed in an orthorhombic unit cell with a and c decreasing linearly from 0.4832 to 0.4778 nm and from 0.5063 to 0.5002 nm, respectively, and b increasing linearly from 0.5401 to 0.5478 nm. The volume of the unit cell decreases continuously with increasing TiO2 content. At higher temperatures the solid solutions decompose into ZrTiO4 and either ZrO2 (monoclinic) or TiO2 (rutile), depeanding on the starting composition. |
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Keywords: | phases zirconia titania alkoxide solid solutions |
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