Evolution equations for grain growth and coarsening

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evolution equations for grain growth and coarsening

Popis výsledku v původním jazyce

A real classical topic of research for evolving systems of microstructures with grains like metals and ceramics is grain growth and coarsening (Ostwald Ripening). Both phenomena are driven by the decrease in total surface energy, while the chemical composition of the individual objects remains unchanged. Only the morphology of the system evolves and gives the impressions that smaller objects are ?eaten by the larger ones. Evolution equations for these phenomena were published in the last century mostlyas phenomenological equations. The authors have, however, shown that the evolution equations can be derived from the Thermodynamic Extremal Principle (TEP). This principle, based on the works of Onsager (1931, 1945) and later of H. Ziegler (1977), allowsto calculate the evolution equations of the state parameters, e.g. the effective radii of individual grains, precipitates etc., by maximizing the dissipation, expressed in a quadratic form of the kinetic parameters, with the constraint t

Název v anglickém jazyce

Evolution equations for grain growth and coarsening

Popis výsledku anglicky

A real classical topic of research for evolving systems of microstructures with grains like metals and ceramics is grain growth and coarsening (Ostwald Ripening). Both phenomena are driven by the decrease in total surface energy, while the chemical composition of the individual objects remains unchanged. Only the morphology of the system evolves and gives the impressions that smaller objects are ?eaten by the larger ones. Evolution equations for these phenomena were published in the last century mostlyas phenomenological equations. The authors have, however, shown that the evolution equations can be derived from the Thermodynamic Extremal Principle (TEP). This principle, based on the works of Onsager (1931, 1945) and later of H. Ziegler (1977), allowsto calculate the evolution equations of the state parameters, e.g. the effective radii of individual grains, precipitates etc., by maximizing the dissipation, expressed in a quadratic form of the kinetic parameters, with the constraint t

Druh

C - Kapitola v odborné knize

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Evolution equations

ISBN

978-1-61209-652-0

Počet stran výsledku

55

Strana od-do

6-59

Počet stran knihy

507

Název nakladatele

Nova Science Publishers, Inc

Místo vydání

New York

Kód UT WoS kapitoly

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