Phase mixture modeling of the grain size dependence of Young's modulus and thermal conductivity of alumina and zirconia ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43921327" target="_blank" >RIV/60461373:22310/20:43921327 - isvavai.cz</a>

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S0955221920300790?token=5264A546DBBA6C3CD74A65FF938C8725B55A4C0D18519D0F0A2D5726219DF163FCC2118E14C3218EE27136F163B52FBB" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0955221920300790?token=5264A546DBBA6C3CD74A65FF938C8725B55A4C0D18519D0F0A2D5726219DF163FCC2118E14C3218EE27136F163B52FBB</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2020.01.069" target="_blank" >10.1016/j.jeurceramsoc.2020.01.069</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Phase mixture modeling of the grain size dependence of Young's modulus and thermal conductivity of alumina and zirconia ceramics

Popis výsledku v původním jazyce

The grain size dependence of Young&apos;s modulus and thermal conductivity of alumina and zirconia ceramics is predicted via phase mixture modeling, using both analytical and numerical approaches. Using typical values for the thickness and properties of the grain boundaries, the equivalent volume fraction of &quot;grain boundary phase&quot; is calculated for a given grain shape. Based on this volume fraction estimate and a rough estimate of the grain boundary properties, the effective properties of the polycrystalline materials are calculated and compared in terms of volume-equivalent sphere diameters. For grains of cubic and tetrakaidecahedral shape excellent agreement is found between numerical calculations and analytical predictions based on the lower Hashin-Shtrikman bound. The grain size dependence is extremely weak for Young&apos;s modulus, but can be more significant for thermal conductivity, especially when the intrinsic conductivity of the material is high. The predictions are compared to literature data.

Název v anglickém jazyce

Phase mixture modeling of the grain size dependence of Young's modulus and thermal conductivity of alumina and zirconia ceramics

Popis výsledku anglicky

The grain size dependence of Young&apos;s modulus and thermal conductivity of alumina and zirconia ceramics is predicted via phase mixture modeling, using both analytical and numerical approaches. Using typical values for the thickness and properties of the grain boundaries, the equivalent volume fraction of &quot;grain boundary phase&quot; is calculated for a given grain shape. Based on this volume fraction estimate and a rough estimate of the grain boundary properties, the effective properties of the polycrystalline materials are calculated and compared in terms of volume-equivalent sphere diameters. For grains of cubic and tetrakaidecahedral shape excellent agreement is found between numerical calculations and analytical predictions based on the lower Hashin-Shtrikman bound. The grain size dependence is extremely weak for Young&apos;s modulus, but can be more significant for thermal conductivity, especially when the intrinsic conductivity of the material is high. The predictions are compared to literature data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GA18-17899S" target="_blank" >GA18-17899S: Částečně a plně slinutá keramika - příprava, mikrostruktura, vlastnosti, modelování a teorie slinování</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

—

Svazek periodika

40

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

3181-3190

Kód UT WoS článku

000523629100052

EID výsledku v databázi Scopus

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