Phase mixture models and unit-cell calculations for the effective elastic and thermal properties of nanocrystalline ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F10%3A00022973" target="_blank" >RIV/60461373:22310/10:00022973 - 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

Phase mixture models and unit-cell calculations for the effective elastic and thermal properties of nanocrystalline ceramics

Popis výsledku v původním jazyce

The properties of nanocrystalline ceramics are in many respects unique because the grain boundaries, which are in reality discontinuities of small but finite thickness, attain significant volume fractions when the average grain size is below approx. 100nm. The simplest way to model the grain size dependence of properties consists in considering the nanocrystalline material as a two-phase composite, i.e. as a binary mixture of two separate phases, a crystalline core phase (with properties correspondingto the bulk solid) and a disordered, glass-like grain boundary phase. When this viewpoint is adopted, the laws of composite theory (micromechanics) can be applied to estimate the effective properties. In this chapter this is done for single-phase ceramicsystems with monodisperse grain size by invoking a unit-cell approach using cubic, tetrakaidecahedral and anisometric grain shapes (trigonal, tetragonal and hexagonal prisms, oblate and prolate). In particular, the effective Young?s modu

Název v anglickém jazyce

Phase mixture models and unit-cell calculations for the effective elastic and thermal properties of nanocrystalline ceramics

Popis výsledku anglicky

The properties of nanocrystalline ceramics are in many respects unique because the grain boundaries, which are in reality discontinuities of small but finite thickness, attain significant volume fractions when the average grain size is below approx. 100nm. The simplest way to model the grain size dependence of properties consists in considering the nanocrystalline material as a two-phase composite, i.e. as a binary mixture of two separate phases, a crystalline core phase (with properties correspondingto the bulk solid) and a disordered, glass-like grain boundary phase. When this viewpoint is adopted, the laws of composite theory (micromechanics) can be applied to estimate the effective properties. In this chapter this is done for single-phase ceramicsystems with monodisperse grain size by invoking a unit-cell approach using cubic, tetrakaidecahedral and anisometric grain shapes (trigonal, tetragonal and hexagonal prisms, oblate and prolate). In particular, the effective Young?s modu

Druh

C - Kapitola v odborné knize

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

<a href="/cs/project/IAA401250703" target="_blank" >IAA401250703: PORÉZNÍ KERAMIKA, KERAMICKÉ KOMPOZITY A NANOKERAMIKA</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Advances in Nanotechnology, Volume 3

ISBN

978-1-61668-161-6

Počet stran výsledku

42

Strana od-do

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Počet stran knihy

342

Název nakladatele

Nova Science Publishers,Hauppauge

Místo vydání

New York

Kód UT WoS kapitoly

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