Interstitial diffusion in systems with multiple sorts of traps

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F13%3A00421229" target="_blank" >RIV/68081723:_____/13:00421229 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0965-0393/21/2/025008" target="_blank" >http://dx.doi.org/10.1088/0965-0393/21/2/025008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0965-0393/21/2/025008" target="_blank" >10.1088/0965-0393/21/2/025008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interstitial diffusion in systems with multiple sorts of traps

Popis výsledku v původním jazyce

The role of several sorts of traps for one diffusing interstitial component is investigated. The site fraction of this component in each trap is calculated due to the local thermodynamic equilibrium condition with its site fraction in the lattice. Combining Fick's first law for diffusive fluxes of individual site fractions with the equilibrium condition and the mass balance allows deriving an extended nonlinear diffusion equation. If the molar volumes of the trap positions are constant with respect to time, then a generalized chemical diffusion coefficient can be derived, which allows performing the diffusion study in terms of the total concentration of the interstitial component. As an alternative way, the total diffusion flux can also be treated as the sum of diffusion fluxes of individual fractions combined with local redistribution of individual fractions based on the thermodynamic local equilibrium condition. Both concepts are presented in simulations for the diffusion of hydrogen

Název v anglickém jazyce

Interstitial diffusion in systems with multiple sorts of traps

Popis výsledku anglicky

The role of several sorts of traps for one diffusing interstitial component is investigated. The site fraction of this component in each trap is calculated due to the local thermodynamic equilibrium condition with its site fraction in the lattice. Combining Fick's first law for diffusive fluxes of individual site fractions with the equilibrium condition and the mass balance allows deriving an extended nonlinear diffusion equation. If the molar volumes of the trap positions are constant with respect to time, then a generalized chemical diffusion coefficient can be derived, which allows performing the diffusion study in terms of the total concentration of the interstitial component. As an alternative way, the total diffusion flux can also be treated as the sum of diffusion fluxes of individual fractions combined with local redistribution of individual fractions based on the thermodynamic local equilibrium condition. Both concepts are presented in simulations for the diffusion of hydrogen

Druh

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

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

<a href="/cs/project/GAP204%2F10%2F1784" target="_blank" >GAP204/10/1784: Modelování difúzních fázových transformací v mnohasložkových systémech s mnoha stechiometrickými fázemi</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Modelling and Simulation in Materials Science and Engineering

ISSN

0965-0393

e-ISSN

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Svazek periodika

21

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

"Art. No. 025008"

Kód UT WoS článku

000315186900008

EID výsledku v databázi Scopus

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