First Principle Study on Hydrogen Diffusion in Degassing

The effects of chlorine on improving hydrogen diffusion have been studied by first principle calculations and we obtain the diffusivity of hydrogen in liquid aluminum which is in agreement with the experimental data. It can be concluded that the diffusion of hydrogen in aluminum melts can be enhance...

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Bibliographic Details
Published in:Key engineering materials 2011-01, Vol.474-476 (SUPPL.2), p.1384-1387
Main Authors: Sun, Bao De, Liu, Yan, Wang, Jun, Dai, Yong Bing
Format: Article
Language:English
Subjects:
Aluminum
Aluminum oxide
Chlorine
Diffusion
Diffusion layers
Liquids
Mathematical analysis
Melts
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Summary:The effects of chlorine on improving hydrogen diffusion have been studied by first principle calculations and we obtain the diffusivity of hydrogen in liquid aluminum which is in agreement with the experimental data. It can be concluded that the diffusion of hydrogen in aluminum melts can be enhanced in the presence of chlorine and mobility of aluminum is depressed by forming alumina layer which can impede the diffusion of hydrogen.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.474-476.1384