Kinetics of thermally activated processes in cordierite-based ceramics
| Autor: | Karel Maca, Vladimir A. Blagojević, Smilja Marković, Nataša Đorđević, Darko Kosanović, Nina Obradović, Vladimir B. Pavlović, Suzana Filipović, Martin Kachlik |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
TeO2 Kinetics Sintering Cordierite 02 engineering and technology engineering.material Atmospheric temperature range 021001 nanoscience & nanotechnology Condensed Matter Physics Kinetic energy DTA 01 natural sciences 010406 physical chemistry 0104 chemical sciences sintering kinetics Chemical engineering mechanical activation visual_art visual_art.visual_art_medium engineering Ceramic Physical and Theoretical Chemistry 0210 nano-technology cordierite |
| Zdroj: | Journal of Thermal Analysis and Calorimetry |
| Popis: | Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100–1400 °C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass% addition of TeO2 and mechanical activation for 40 min reduced the sintering temperature of cordierite ceramics to around 1100 °C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder. This is a post-peer-review, pre-copyedit version of the article: Obradović, N., Blagojević, V., Filipović, S., Đorđević, N., Kosanović, D., Marković, S., Kachlik, M., Maca, K., Pavlović, V., 2018. Kinetics of thermally activated processes in cordierite-based ceramics. J Therm Anal Calorim. [https://doi.org/10.1007/s10973-018-7924-1] |
| Databáze: | OpenAIRE |
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