The influence of the crystallization process on the internal friction of some oxide glasses
| Autor: | Li Jiazhi |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Alkali ions
Materials science Diffusion Oxide Physics::Optics Mineralogy Thermodynamics Condensed Matter Physics Condensed Matter::Disordered Systems and Neural Networks Internal friction Electronic Optical and Magnetic Materials law.invention Crystal Condensed Matter::Materials Science chemistry.chemical_compound chemistry law Condensed Matter::Superconductivity Phase (matter) Physics::Atomic and Molecular Clusters Materials Chemistry Ceramics and Composites Crystallization |
| Zdroj: | Journal of Non-Crystalline Solids. 80:1-10 |
| ISSN: | 0022-3093 |
| Popis: | The influence of phase separation and crystallization on the internal friction of some oxide glasses is reviewed and discussed. In alkali-containing glasses, the internal friction peak caused by stress-induced diffusion of alkali ions decreases in magnitude and shifts to higher temperature slightly due to phase separation. And in alkali-free glasses phase separation only exerts a minor decrease upon the background of internal friction curves, whereas crystallization influences the internal friction of these glasses more strongly. Because of crystallization, in alkali-containing glasses alkali ions might diffuse in a residual glass phase and a crystal phase, respectively. This might cause corresponding internal friction peaks. And in alkali-free glasses, no evident internal friction peak is observed. However, the author found a high and wide internal friction peak at about 100°C in the crystallized MgO·Al2O3·SiO2·TiO2 and ZnO·Al2O3·SiO2·ZrO2 glasses. The peak occurring in the two glasses studied is probably connected with glass crystallization and crystallized crystals. |
| Databáze: | OpenAIRE |
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