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Hydration of phosphate and borate glasses in an autoclave |
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| Authors: | Huang Zhanjie Toshinobu Yoko Kanichi Kamiya Sumio Sakka |
| Affiliation: | Institute of Optics and Electronics, Academia Sinica, PO Box 355, Chengdu, PRC Department of Industrial Chemistry, Faculty of Engineering, Mie University, Tsu, Mie-Ken 514, Japan Institute for Chemical Research, Kyoto University, Uji, 611, Japan |
| Abstract: | Kinetics of hydration of CaO---Al2O3---P2O5 and Na2O---CaO---B2O3---Al2O3 glasses in an autoclave at high temperatures and high pressures has been investigated. The hydration of the phosphate glasses may occur as a result of hydrolysis of glass constituents to form orthophosphate crystals. Cabal glasses which do not contain any alkali oxides have shown a quite high resistance to water. Substitution of sodium for calcium deteriorates the chemical durability of Cabal glasses. |
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