Thermal conductivity of Al2O3-ZrO2 composite ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F11%3A43891426" target="_blank" >RIV/60461373:22310/11:43891426 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1111/j.1551-2916.2011.04875.x" target="_blank" >http://dx.doi.org/10.1111/j.1551-2916.2011.04875.x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/j.1551-2916.2011.04875.x" target="_blank" >10.1111/j.1551-2916.2011.04875.x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal conductivity of Al2O3-ZrO2 composite ceramics

Popis výsledku v původním jazyce

Al2O3-ZrO2 ceramics were prepared by slip casting and sintered at 1350 °C. The composition of prepared samples varied from pure alumina to doped zirconia (3Y-TZP) with steps of 10 vol.%. The relative density of the sintered samples varied from 94 to 98 %, depending on the composition. Thermal diffusivity of sintered samples was measured by means of the xenon-flash method at 100, 200, 400, 600, 800 and 1000 °C and thermal conductivities were calculated based on measured bulk densities and specific heat data and finally corrected for porosity effects. As expected, the thermal conductivity decreased with increasing zirconia content, and in the case of samples with higher alumina content it also decreased with increasing temperature. Effective thermal conductivities are close to the lower Hashin-Shtrikman bound and the recently proposed sigmoidal average. Empirical relations were used to fit the dependence of effective thermal conductivity of Al2O3-ZrO2 ceramics on both composition and tem

Název v anglickém jazyce

Thermal conductivity of Al2O3-ZrO2 composite ceramics

Popis výsledku anglicky

Al2O3-ZrO2 ceramics were prepared by slip casting and sintered at 1350 °C. The composition of prepared samples varied from pure alumina to doped zirconia (3Y-TZP) with steps of 10 vol.%. The relative density of the sintered samples varied from 94 to 98 %, depending on the composition. Thermal diffusivity of sintered samples was measured by means of the xenon-flash method at 100, 200, 400, 600, 800 and 1000 °C and thermal conductivities were calculated based on measured bulk densities and specific heat data and finally corrected for porosity effects. As expected, the thermal conductivity decreased with increasing zirconia content, and in the case of samples with higher alumina content it also decreased with increasing temperature. Effective thermal conductivities are close to the lower Hashin-Shtrikman bound and the recently proposed sigmoidal average. Empirical relations were used to fit the dependence of effective thermal conductivity of Al2O3-ZrO2 ceramics on both composition and tem

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the American Ceramic Society

ISSN

0002-7820

e-ISSN

—

Svazek periodika

94

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

4404-4409

Kód UT WoS článku

000297848100054

EID výsledku v databázi Scopus

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