Modelling the influence of trapping on hydrogen permeation in metals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F13%3A00421198" target="_blank" >RIV/68081723:_____/13:00421198 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.corsci.2013.07.010" target="_blank" >http://dx.doi.org/10.1016/j.corsci.2013.07.010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.corsci.2013.07.010" target="_blank" >10.1016/j.corsci.2013.07.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modelling the influence of trapping on hydrogen permeation in metals

Popis výsledku v původním jazyce

Hydrogen permeation (diffusion) is strongly influenced by the local hydrogen concentration and by the density and depth of traps. Consequently hydrogen diffusion cannot be described by a constant effective diffusivity as suggested in standards and several papers. A modelling study for diffusion of hydrogen in metals with traps is presented. Simulations are performed for a charging and discharging process, showing a remarkable asymmetry. The actual chemical diffusivity ranges over several orders of magnitude depending on the hydrogen concentration as well as the density and depth of traps. Consequently, the concept of effective diffusivity outlined in standards and many publications fails.

Název v anglickém jazyce

Modelling the influence of trapping on hydrogen permeation in metals

Popis výsledku anglicky

Hydrogen permeation (diffusion) is strongly influenced by the local hydrogen concentration and by the density and depth of traps. Consequently hydrogen diffusion cannot be described by a constant effective diffusivity as suggested in standards and several papers. A modelling study for diffusion of hydrogen in metals with traps is presented. Simulations are performed for a charging and discharging process, showing a remarkable asymmetry. The actual chemical diffusivity ranges over several orders of magnitude depending on the hydrogen concentration as well as the density and depth of traps. Consequently, the concept of effective diffusivity outlined in standards and many publications fails.

Druh

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

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

—

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

Corrosion Science

ISSN

0010-938X

e-ISSN

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Svazek periodika

76

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

382-389

Kód UT WoS článku

000324898400034

EID výsledku v databázi Scopus

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