Evolution of Young's modulus and damping of Czech kaolins during sintering monitored via impulse excitation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F24%3A00585868" target="_blank" >RIV/61388980:_____/24:00585868 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/24:43929042
Result on the web
<a href="https://doi.org/10.1016/j.jeurceramsoc.2024.04.019" target="_blank" >https://doi.org/10.1016/j.jeurceramsoc.2024.04.019</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2024.04.019" target="_blank" >10.1016/j.jeurceramsoc.2024.04.019</a>

Result language
angličtina
Original language name
Evolution of Young's modulus and damping of Czech kaolins during sintering monitored via impulse excitation
Original language description
The evolution of Young's modulus and damping is investigated for Czech kaolins in situ via the impulse excitation technique (IET) from room temperature to 1250 and 1400 °C. During heating the processes of drying, dehydroxylation, spinel formation, mullitization, silica release and glass melting are clearly discernible. During cooling Young's modulus increases, exhibiting a flat maximum around 800 °C and a steep decrease below 200 °C when the cristobalite content is high. Differential IET curves are introduced as a new representation of IET results, and damping curves are shown to provide additional information. The phase composition is determined via XRD, including the glass phase. Based on the densities, Young's moduli and volume fractions of the individual phases, the densities and Young's moduli of the kaolin-based ceramics are calculated and compared to theoretical predictions, showing that Young's modulus is nicely predicted by a benchmark relation for partially sintered ceramics with concave pores.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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