Elastic properties of porous alumina, zirconia and composite ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F14%3A43898421" target="_blank" >RIV/60461373:22310/14:43898421 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Elastic properties of porous alumina, zirconia and composite ceramics

Popis výsledku v původním jazyce

Micromechanical calculations and elasticity standard relations are used to predict the elastic properties of porous alumina, zirconia and kaolin-based ceramics, as well as the hightemperature Young moduli of alumina-zirconia and alumina-mullite composites. The predictions are compared with experimental results obtained via impulse excitation. It is found that the Young moduli of highly porous (cellular) alumina ceramics can be predicted via the Gibson-Ashby powerlaw relation, whereas for partially sintered kaolin-based ceramics our exponential relation, albeit better than the Gibson-Ashby relation, does not give a satisfactory prediction. However, once the Young moduli are known, the shear and bulk moduli can be reliably predicted in both cases, basedon rough information on the Poisson ratio. The temperature dependence of the Young's moduli of two-phase composites can be quite precisely predicted as soon as the master curves of the constituent phases and the type of porosity (convex,

Název v anglickém jazyce

Elastic properties of porous alumina, zirconia and composite ceramics

Popis výsledku anglicky

Micromechanical calculations and elasticity standard relations are used to predict the elastic properties of porous alumina, zirconia and kaolin-based ceramics, as well as the hightemperature Young moduli of alumina-zirconia and alumina-mullite composites. The predictions are compared with experimental results obtained via impulse excitation. It is found that the Young moduli of highly porous (cellular) alumina ceramics can be predicted via the Gibson-Ashby powerlaw relation, whereas for partially sintered kaolin-based ceramics our exponential relation, albeit better than the Gibson-Ashby relation, does not give a satisfactory prediction. However, once the Young moduli are known, the shear and bulk moduli can be reliably predicted in both cases, basedon rough information on the Poisson ratio. The temperature dependence of the Young's moduli of two-phase composites can be quite precisely predicted as soon as the master curves of the constituent phases and the type of porosity (convex,

Druh

D - Stať ve sborníku

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

<a href="/cs/project/GAP108%2F12%2F1170" target="_blank" >GAP108/12/1170: Porézní keramika s řízenou elasticitou a tepelnou vodivostí</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Selected, peer reviewed papers from the 7th International Conference on Materials Structure and Micromechanics of Fracture MSMF7

ISBN

978-3-03785-934-6

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

618-621

Název nakladatele

Trans Tech Publications

Místo vydání

Zürich

Místo konání akce

Brno (Czech Republic)

Datum konání akce

1. 7. 2013

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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