Formation and Transformation of Cubic ZrO2 Solid Solutions in the System ZrO2—Al2O3 |
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| Authors: | Osamu Yamaguchi Masakazu Shirai Masaru Yoshinaka |
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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-Al2O3, cubic ZrO2 solid solutions containing up to 40 mol% Al2O3 crystallize at low temperatures from amorphous materials prepared by the simultaneous hydrolysis of zirconium and aluminum alkoxides. The values of the lattice parameter, a, increase linearly from 0.5095 to 0.5129 nm with increasing Al2O3 content. At higher temperatures, the solid solutions transform into tetragonal ZrO2 and α-Al2O3. Pure ZrO2 crystallizes in the tetragonal form at 415° to 440°C. |
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