The Effect of Long-Term Exposure to High Temperature Atmosphere on the Mechanical Properties of Al2O3-Based Ceramic Materials

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43917975" target="_blank" >RIV/60461373:22310/20:43917975 - isvavai.cz</a>
Alternative codes found
RIV/26722445:_____/20:N0000043 RIV/60461373:22320/20:43917975
Result on the web
<a href="http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1294" target="_blank" >http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1294</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.13168/cs.2019.0046" target="_blank" >10.13168/cs.2019.0046</a>

Result language
angličtina
Original language name
The Effect of Long-Term Exposure to High Temperature Atmosphere on the Mechanical Properties of Al2O3-Based Ceramic Materials
Original language description
Two corundum-based ceramic materials (C799 and C795) and one type of mullite ceramics (C610) have been tested for the production of components of technological circuits working with high-temperature helium and supercritical water. The materials were exposed to an atmosphere of high-temperature helium (900 °C), air (900 °C) and supercritical water (577 °C; 24 MPa) for 1000 hours and subsequently tested for bending strength at temperatures up to 1400 °C. The highest bending strength was exhibited by the corundum ceramics C799 (more than 300 MPa at 25 °C); for a significant decrease in the strength, it was necessary to use temperatures higher than 1000 °C. This material also exhibited relatively good stability during exposure to high-temperature helium, hot air as well as supercritical water; after 1000-hour exposure, its tensile strength decreased by maximally 11 %. Therefore, the pure corundum material has been evaluated as the most suitable among the tested materials for the production of components of the mentioned technological circuits.
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
20504 - Ceramics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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