Copper-Alkali Ion Exchange of Alkali Aluminosilicate Glasses in Molten CuCl—An Ion Exchange Controlled by the Cu+→Cu2+ Oxidation Reaction in Glass |
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| Authors: | Toshinobu Yoko Kanichi Kamiya Yoshihiro Ishino Sumio Sakka |
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| Affiliation: | Department of Industrial Chemistry, Faculty of Engineering, Mie University, Tsu, Mie-ken 514, Japan;Institute for Chemical Research, Kyoto University, Uji, Kyoto 611, Japan |
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| Abstract: | The kinetics of copper-potassium ion exchange of potassium aluminosilicate glass have been investigated in molten CuCl at 550°C in air and nitrogen. The presence of oxygen dissolved in molten CuCl has a great effect on the Cu-K ion-exchange kinetics, i.e. ion exchange in nitrogen is controlled by the interdiffusion process of Cu+ and K+ in the glass, whereas ion exchange in air seems to be controlled by the Cu+→Cu2+ oxidation reaction. |
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