Elastic properties of porous oxide ceramics prepared using starch as a pore-forming agent

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F09%3A00021503" target="_blank" >RIV/60461373:22310/09:00021503 - isvavai.cz</a>

Alternative codes found

RIV/67985891:_____/09:00335445

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Elastic properties of porous oxide ceramics prepared using starch as a pore-forming agent

Original language description

The elastic properties, in particular the tensile modulus (Young's modulus) and Poisson ratio, of porous alumina, zirconia, and alumina-zirconia composite ceramics are studied using the resonance frequency method and the results compared with theoreticalpredictions. Starch is used as a pore-forming agent, so that the resulting microstruture is essentially of the matrix-inclusion type (wiht large bulk pores, connected by small throats when a percolation threshold is exceeded). It is found that for thistype of microstructure the porosity dependence of the Young's moldulus is significantly below the upper Hashin-Shtrikman bound and the power-law prediction; it corresponds well, however, to a recently proposed exponential relation and to an empirical volume-weighted average of the upper and lower Hahin-Shtrikman bound. Results for all three types of ceramics indicate that - in the porosity range considered, i.e. up to approximately 50% - the Poisson ratio depends only slightly on porosit

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JH - Ceramics, fire-proof materials and glass

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

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

Name of the periodical

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

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Volume of the periodical

29

Issue of the periodical within the volume

13

Country of publishing house

BE - BELGIUM

Number of pages

7

Pages from-to

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UT code for WoS article

000268401700013

EID of the result in the Scopus database

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