Determination of depths of traps for interstitials from thermodynamic data: a new view on carbon trapping and diffusion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F13%3A00421230" target="_blank" >RIV/68081723:_____/13:00421230 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0965-0393/21/6/065012" target="_blank" >http://dx.doi.org/10.1088/0965-0393/21/6/065012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0965-0393/21/6/065012" target="_blank" >10.1088/0965-0393/21/6/065012</a>

Result language

angličtina

Original language name

Determination of depths of traps for interstitials from thermodynamic data: a new view on carbon trapping and diffusion

Original language description

Traps, such as dislocation cores, foreign atoms, surfaces of nano-precipitates, etc, can significantly influence the kinetics of diffusion of interstitial atoms in a crystal lattice. Trapping is reflected in the chemical diffusion coefficient, whose value can be up to several orders of magnitude lower than the corresponding diffusion coefficient in a trap-free system. If we consider trapping only at dilute foreign atoms, we may assume only one sort of traps in the system, the depth of which is characterized by Delta E (trapping enthalpy) given by the decrease in energy due to trapping of one mole of interstitials. In this paper, a rigorous thermodynamically based concept is offered to extract the value of trapping enthalpy Delta E from chemical potentials of interstitial atoms which are, for instance, available in the form of CALPHAD-type thermodynamic databases. Exemplarily, the values of Delta E for C-trapping at Cr impurities are evaluated. For comparison, trapping enthalpies of C a

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

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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

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

"Art. No. 065012"

UT code for WoS article

000323290600013

EID of the result in the Scopus database

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