Evolution of phase composition, porosity and elastic properties during sintering and temperature dependence of Young's modulus of kaolin-calcite-based porous anorthite ceramics (CaO-SiO2-Al2O3 system)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F25%3A00637967" target="_blank" >RIV/61388980:_____/25:00637967 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/25:43932925
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0272884225036119" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884225036119</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ceramint.2025.07.343" target="_blank" >10.1016/j.ceramint.2025.07.343</a>

Result language
angličtina
Original language name
Evolution of phase composition, porosity and elastic properties during sintering and temperature dependence of Young's modulus of kaolin-calcite-based porous anorthite ceramics (CaO-SiO2-Al2O3 system)
Original language description
The evolution of Young's modulus during sintering to 900–1300 °C of mixtures of 80 wt% kaolin (two types: fine quartz-poor, coarse quartz-rich) and 20 wt% calcite is investigated using the impulse excitation technique/IET. While both materials are dominated by anorthite (66–80 wt%) after sintering above 1200 °C, there are major differences concerning quartz content, glass phase content and porosity (37–43 %). Changes in the phase composition are reflected in shrinkage and density, whereas porosity is almost unaffected. The room temperature values of elastic constants increase with increasing sintering temperature, with Young's modulus being close to the exponential prediction. The Young's modulus evolution during sintering to 1200 °C, monitored by temperature-dependent IET measurements, reveals all important processes (kaolinite dehydroxylation, calcite decomposition, gehlenite formation etc.). IET measurements of the temperature dependence of Young's modulus of as-sintered ceramics reveal significant differences in the behavior of the two materials.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
<a href="/en/project/GA22-25562S" target="_blank" >GA22-25562S: Impulse excitation as an unconventional method for monitoring phase changes and microstructure evolution during thermal loading of materials</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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