Effect of high-temperature inert gas atmosphere on the thermal stability of advanced refractory materials
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43923888" target="_blank" >RIV/60461373:22310/22:43923888 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22320/22:43923888 RIV/26722445:_____/22:N0000035
Result on the web
<a href="https://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1567" target="_blank" >https://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1567</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.13168/cs.2022.0017" target="_blank" >10.13168/cs.2022.0017</a>
Alternative languages
Result language
angličtina
Original language name
Effect of high-temperature inert gas atmosphere on the thermal stability of advanced refractory materials
Original language description
The effect of long-term exposure to a high-temperature gas atmosphere on the stability of ceramic materials has been investigated. Samples of materials based on ZrO2 (Zr85, Zr95), Al2O3 (Al100), Al2O3-SiO2 (Al63, Al70, Al76, Al96) and SiC (Si100) were exposed to an atmosphere of dry helium and nitrogen (the dew point of water was approximately −70 °C) at the temperature of 900 °C for 1000 hours. Bending-strength tests at 20 and Hot modulus of rupture (HMOR) tests at 900 °C were performed on exposed and unexposed samples. In addition, the chemical composition of the materials tested and their criteria of relative density, i.e. bulk density, apparent porosity and water absorption, were determined together with their changes after material exposure. The most pronounced change in bending strength at 20 °C was observed after the exposure of Zr95 to nitrogen, with an increase of up to approximately 25 % from the initial state. At 900 °C, the bending strength increased by about 15–20 % for Zr95 and Zr85 after exposure to helium and nitrogen. On the other hand, when Al63 was exposed to helium and nitrogen at 900 °C, its bending strength decreased. There were no substantial changes in the bending strength of the other materials tested after the exposure. Also, the exposure did not have a significant effect on the change in the criteria of relative density or chemical composition of any of the materials tested.
Czech name
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Czech description
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Classification
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
Result continuities
Project
<a href="/en/project/TK02030024" target="_blank" >TK02030024: Stability and resistance of materials for high temperature helium circuits</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ceramics-Silikáty
ISSN
0862-5468
e-ISSN
1804-5847
Volume of the periodical
66
Issue of the periodical within the volume
2
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
8
Pages from-to
228-235
UT code for WoS article
000795502800001
EID of the result in the Scopus database
2-s2.0-85129691965