Characterization of Thermal Conductivity of SiO2–Al2O3–Y2O3 Glasses
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F15%3A00002771" target="_blank" >RIV/46747885:24210/15:00002771 - isvavai.cz</a>
Result on the web
<a href="https://api.elsevier.com/content/article/eid/1-s2.0-S0040603115000118" target="_blank" >https://api.elsevier.com/content/article/eid/1-s2.0-S0040603115000118</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.tca.2015.01.010" target="_blank" >10.1016/j.tca.2015.01.010</a>
Alternative languages
Result language
angličtina
Original language name
Characterization of Thermal Conductivity of SiO2–Al2O3–Y2O3 Glasses
Original language description
The thermal properties of SiO2–Al2O3–Y2O3 glasses were investigated within a temperature range of 25–800 °C. This found that glass with a composition of 24Y2O3.21Al2O3.55SiO2 exhibits a thermal conductivity of 1.04 W/m K at room temperature, and thermal conductivity increases with temperature due to an increase in the amount of bridging oxygen. The thermal conductivity of glasses with a composition of xY2O3.21Al2O3.(79-x)SiO2, on the other hand, decreased with an increase in either the Y2O3 content or Al2O3/SiO2 ratio. This decrease in thermal conductivity was analyzed with respect to the decrease in phonon mean free path resulting from the increased non-bridging oxygen content, which revealed 24Y2O3.21Al2O3.55SiO2 to have the maximum thermal conductivity of 1.7 W/m K at 800 °C. Glass systems incorporating yttria can therefore be considered suitable sintering additives for highly thermally conducting ceramics such as silicon nitride.
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
20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Thermochimica Acta
ISSN
0040-6031
e-ISSN
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Volume of the periodical
604
Issue of the periodical within the volume
2015
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
6
Pages from-to
1-6
UT code for WoS article
000351644300001
EID of the result in the Scopus database
2-s2.0-84961291462