Interstitial diffusion in systems with multiple sorts of traps

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Interstitial diffusion in systems with multiple sorts of traps

Original language description

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

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

BJ - Thermodynamics

OECD FORD branch

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Project

<a href="/en/project/GAP204%2F10%2F1784" target="_blank" >GAP204/10/1784: Modelling of diffusional phase transformations in multicomponent systems with multiple stoichiometric phases</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

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

Name of the periodical

Modelling and Simulation in Materials Science and Engineering

ISSN

0965-0393

e-ISSN

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Volume of the periodical

21

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

"Art. No. 025008"

UT code for WoS article

000315186900008

EID of the result in the Scopus database

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