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Sol-gel coatings of BaO-TiO2-SiO2 compositions |
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| Authors: | Qi Chen G. H. Frischat Jijian Cheng |
| Affiliation: | (1) Institut für Nichtmetallische Werkstoffe, Technische Universität, Clausthal, Germany;(2) Research Institute of Glasses and Ceramics, East China University of Chemical Technology, Shanghai, China;(3) Present address: East China University of Chemical Technology, Shanghai, China |
| Abstract: | New alkali resistant BaO-TiO2-SiO2 coatings have been developed via the sol-gel process. In the solutions and in the gels (T<300°C) an infrared absorption band at 930 cm–1 gives the possible evidence of mixed Si-O-Ti bonds, which have not been found in the system SiO2-TiO2-ZrO2. Baking the films at about 500°C for less than 1 h leads to stable layers with negligible residual carbon contents. Compositions near 20 BaO-40 TiO2-40 SiO2 showed the best performance. |
| Keywords: | BaO-TiO2-SiO2 coating alkali resistant films alkali durability |
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