Hydrogen-Vacancy Interactions in Fe-C Alloys
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Monasterio-2009-Hydrogen-Vacancy Int.pdf
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Author(s)
Yip, Sidney
Lau, Timothy T.
Monasterio, Paul Rene
Van Vliet, Krystyn J
Date Issued
August 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Monasterio, Paul R. et al. “Hydrogen-Vacancy Interactions in Fe-C Alloys.” Physical Review Letters 103.8 (2009): 085501. (C) 2010 The American Physical Society.
Version
Final published version
Abstract
Energetics and concentrations of hydrogen-containing point defect clusters (PDCs) in Fe-C alloys are calculated and cast into a PDC dominance diagram. Because of the strong binding effects of iron vacancies on the stability of the clusters, hydrogen accumulation requires the total hydrogen and vacancy concentrations to be comparable. As a result of the interplay between repulsive and attractive binding processes, PDC populations in Fe-C-H effectively decouple into the binary systems Fe-C and Fe-H. This results in significant vacancy-hydrogen PDC populations even for low total hydrogen concentrations.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.103.085501
