Analytical and Numerical Calculations of the 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%2F10%3A00022975" target="_blank" >RIV/60461373:22310/10:00022975 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Analytical and Numerical Calculations of the Thermal Conductivity of Al2O3 - ZrO2 Composite Ceramics

Popis výsledku v původním jazyce

Thermal conductivity is one of the essential properties of ceramic materials with respect to their application as insulation materials, refractories or materials for electronics. The topic of this contribution is the estimation and calculation of the thermal conductivity of Al2O3 ? ZrO2 composite ceramics using analytical and numerical approaches. Both the dependence of thermal conductivity on the composition and on the grain size is taken into account for one- and two-phase composites. In the first part, an analytical solution of the dependence on the composition based upon the micromechanical bounds (Hashin-Shtrikman bounds) and on the grain size based upon the phase mixture approach is presented with the use of a relatively new relation (sigmoidal average). For the estimation of the latter a model of grain boundary as a separate phase of thickness 1nm and thermal conductivity close to that of glasses and amorphous dielectrics, viz. 1.1W/mK is assumed. The second part presents numeri

Název v anglickém jazyce

Analytical and Numerical Calculations of the Thermal Conductivity of Al2O3 - ZrO2 Composite Ceramics

Popis výsledku anglicky

Thermal conductivity is one of the essential properties of ceramic materials with respect to their application as insulation materials, refractories or materials for electronics. The topic of this contribution is the estimation and calculation of the thermal conductivity of Al2O3 ? ZrO2 composite ceramics using analytical and numerical approaches. Both the dependence of thermal conductivity on the composition and on the grain size is taken into account for one- and two-phase composites. In the first part, an analytical solution of the dependence on the composition based upon the micromechanical bounds (Hashin-Shtrikman bounds) and on the grain size based upon the phase mixture approach is presented with the use of a relatively new relation (sigmoidal average). For the estimation of the latter a model of grain boundary as a separate phase of thickness 1nm and thermal conductivity close to that of glasses and amorphous dielectrics, viz. 1.1W/mK is assumed. The second part presents numeri

Druh

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

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

—

Projekt

—

Návaznosti

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

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Ceramics - J. Georg. Ceram. Assoc.

ISSN

1512-0325

e-ISSN

—

Svazek periodika

23 (2010)

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GE - Gruzie

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—