The effect of long-term high-temperature exposure in gaseous atmospheres on SiC ceramics with regard to advanced applications in nuclear energy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F25%3AN0000099" target="_blank" >RIV/26722445:_____/25:N0000099 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22810/25:43933070 RIV/60461373:22310/25:43933070 RIV/60461373:22320/25:43933070
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0272884225051211" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884225051211</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ceramint.2025.10.233" target="_blank" >10.1016/j.ceramint.2025.10.233</a>
Alternative languages
Result language
angličtina
Original language name
The effect of long-term high-temperature exposure in gaseous atmospheres on SiC ceramics with regard to advanced applications in nuclear energy
Original language description
The aim of the paper was to map the properties of dense silicon carbide ceramics after long-term high-temperature exposure in controlled atmospheres with regard to the use of SiC ceramics in the field of nuclear energy, mainly in connection with helium-cooled fourth-generation reactors. The selected atmospheres included a model gas (helium with presumed impurities), pure helium, argon, nitrogen, air, and all of the aforementioned gases with trace amounts of water. Commercial samples of dense SiC ceramics in the form of rods were tested. The samples were exposed in controlled atmospheres for 1000 h at a temperature of 900 °C. This temperature corresponded to the maximum operating temperature of the reactor. The properties of the samples were compared before and after exposure. Furthermore, elemental (XRF) and phase analysis (XRD), gravimetric measurements, microscopic characterization and microanalysis (SEM/EDS), photoelectron spectra (XPS) measurements, and strength measurements at room and elevated temperatures (CMOR, HMOR) were performed. The experiments were supplemented with a thermochemical model. It was found that the experimental conditions set do not affect the key properties of the ceramics, such as mechanical strength. This is a favorable result from the point of view of planned use. However, macroscopic changes in color were observed on the surface of the ceramic. Based on detailed analyses (XPS, etc.), these changes were attributed to the oxidation of the surface layer of SiC ceramic.
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
20501 - Materials engineering
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
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ceramics International
ISSN
0272-8842
e-ISSN
1873-3956
Volume of the periodical
51
Issue of the periodical within the volume
29
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
60338-60347
UT code for WoS article
001625899400033
EID of the result in the Scopus database
2-s2.0-105020192028