Effects of Thermal Treatments on the Microstructure and the Conductivity of Superion-Conducting Glass-Ceramics in the System Na2O-R2O3-P2O5
| العنوان: | Effects of Thermal Treatments on the Microstructure and the Conductivity of Superion-Conducting Glass-Ceramics in the System Na2O-R2O3-P2O5 |
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| المؤلفون: | Takeshi Nojiri, Takafumi Kanazawa, Kimihiro Yamashita |
| المصدر: | Journal of the Ceramic Society of Japan. 97:1091-1096 |
| بيانات النشر: | Ceramic Society of Japan, 1989. |
| سنة النشر: | 1989 |
| مصطلحات موضوعية: | Materials science, Annealing (metallurgy), Analytical chemistry, Ionic bonding, Mineralogy, General Chemistry, Conductivity, Condensed Matter Physics, Thermal conduction, Microstructure, law.invention, law, visual_art, Materials Chemistry, Ceramics and Composites, visual_art.visual_art_medium, Ionic conductivity, Ceramic, Crystallization |
| الوصف: | In the system Na2O-R2O3-P2O5-SiO2 (R=Y, Sm, Gd), new fast Na+-conducting glass-ceramics were obtained. These materials were structurally analogous to the silicates of Na3YSi3O9 (N3YS), Na5YSi4O12 (N5YS) and Na9YSi6O18 (N9YS). The ionic conductivities of these materials were strongly dependent on the type of crystal phase. Among them N5YPS-type glass-ceramic showed the highest ionic conductivity, σ300=9.8×10-2S/cm. The complex admittance analysis indicated that the N5YPS-type glass-ceramics consisted of two phases, crystallized grains and residual glassy matrix. Both time and temperature for crystallization had considerable influences on the conduction properties, thus, annealing at a higher temperature for longer time gave higher ionic conductivity of crystallized grains and higher activation energy of residual glass. Microstructure was considered to understand the thermal effects. The optimum conditions for crystallization were discussed with reference to the conduction properties. |
| تدمد: | 1882-1022 0914-5400 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::bd22873835ed2b28f1e7b5f2bd265557 https://doi.org/10.2109/jcersj.97.1091 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........bd22873835ed2b28f1e7b5f2bd265557 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18821022 09145400 |
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