ソーダ石灰ガラス基板上に形成したゾル-ゲルTiO<sub>2</sub>-SiO<sub>2</sub>薄膜のアルカリパッシベイションメカニズム

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タイトル別名
  • Alkali Passivation Mechanism of Sol-Gel Derived TiO<sub>2</sub>-SiO<sub>2</sub> Films Coated on Soda-Lime-Silica Glass Substrates
  • ソーダ セッカイ ガラス キバンジョウ ニ ケイセイシタ ゾル ゲル TiO2

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説明

Alkali passivation mechanism of sol-gel derived TiO2-SiO2 glass films with different TiO2 contents coated on a soda-lime-silica glass substrate has been studied by SIMS and XPS analyses, and compared with the results of a sol-gel derived pure SiO2 film. An increase in TiO2 content in the TiO2-SiO2 film increased the sodium concentration in the film, which was induced by sodium migration from the glass substrate during the heat-treatment. It was also found that the chemical state of sodium ions in the TiO2-SiO2 films was different from the state of those either in the glass substrate or in the sol-gel derived pure SiO2 film. It is thus concluded that the TiO2-SiO2 films serve not as a barrier but as an effective getter of alkli ions and thereby effectively improve the weathering resistance of the glass substrate.

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