Effects of TiO2 content and thermal parameters on crystallization kinetics and mechanical properties of phosphate based glass system
| Autor: | Tawee Tunkasiri, Kamonpan Pengpat, Pratthana Intawin, Arnon Kraipok, Surapong Panyata, Sukum Eitssayeam |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
02 engineering and technology Activation energy 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Indentation hardness 010406 physical chemistry 0104 chemical sciences law.invention Chemical engineering law Rutile Phase (matter) Vickers hardness test Knoop hardness test Physical and Theoretical Chemistry Crystallization 0210 nano-technology Glass transition Instrumentation |
| Zdroj: | Thermochimica Acta. 690:178699 |
| ISSN: | 0040-6031 |
| Popis: | The effects of TiO2 content and thermal parameters on crystallization kinetics and mechanical properties of sodium-calcium-phosphate glass system have been revealed in this study. From the DTA results using for crystallization kinetics study, the activation energies of crystallization and Avrami parameters have been calculated. The glass transition (Tg), crystallization temperature (Tp) and activation energy (E) were found to increase with the increase in the content of TiO2. The major crystalline phases were calcium pyrophosphate and sodium dititanium triphosphate along with rutile as the minor crystalline phase presented as phase separation in the samples. Mechanical properties were obtained from the microhardness measurements for all samples. It was found that the added TiO2 content caused positive effect while heat treatment temperature caused negative effect on Young's modulus, Knoop hardness and Vickers hardness. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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