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Title: Tracer study of oxygen and hydrogen uptake by Mg alloys in air with water vapor

We studied the pure oxidation of Mg, Mg–3Al–1Zn (AZ31B), and Mg–1Zn–0.25Zr–<0.5Nd (ZE10A) at 85 °C in humid air using sequential exposures with H 2 18O and D 2 16O for water vapor. Incorporation of 18O in the hydroxide/oxide films indicated that oxygen from water vapor participated in the reaction. Moreover, penetration of hydrogen into the underlying metal was observed, particularly for the Zr- and Nd-containing ZE10A. Isotopic tracer profiles suggested a complex mixed inward/outward film growth mechanism.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [4]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Manitoba, Winnipeg (Canada)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Central Metallurgical Research and Development Inst., Cairo (Egypt)
  4. Magnesium Elektron North America, Madison, IL (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 106; Journal Issue: C; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Magnesium alloys; Oxidation; Hydrogen diffusion; Secondary ion mass spectroscopy (SIMS); Water vapor
OSTI Identifier:
1185942
Alternate Identifier(s):
OSTI ID: 1251489

Brady, M. P., Fayek, M., Meyer, H. M., Leonard, D. N., Elsentriecy, H. H., Unocic, K. A., Anovitz, L. M., Cakmak, E., Keiser, J. R., Song, G. L., and Davis, B.. Tracer study of oxygen and hydrogen uptake by Mg alloys in air with water vapor. United States: N. p., Web. doi:10.1016/j.scriptamat.2015.04.032.
Brady, M. P., Fayek, M., Meyer, H. M., Leonard, D. N., Elsentriecy, H. H., Unocic, K. A., Anovitz, L. M., Cakmak, E., Keiser, J. R., Song, G. L., & Davis, B.. Tracer study of oxygen and hydrogen uptake by Mg alloys in air with water vapor. United States. doi:10.1016/j.scriptamat.2015.04.032.
Brady, M. P., Fayek, M., Meyer, H. M., Leonard, D. N., Elsentriecy, H. H., Unocic, K. A., Anovitz, L. M., Cakmak, E., Keiser, J. R., Song, G. L., and Davis, B.. 2015. "Tracer study of oxygen and hydrogen uptake by Mg alloys in air with water vapor". United States. doi:10.1016/j.scriptamat.2015.04.032. https://www.osti.gov/servlets/purl/1185942.
@article{osti_1185942,
title = {Tracer study of oxygen and hydrogen uptake by Mg alloys in air with water vapor},
author = {Brady, M. P. and Fayek, M. and Meyer, H. M. and Leonard, D. N. and Elsentriecy, H. H. and Unocic, K. A. and Anovitz, L. M. and Cakmak, E. and Keiser, J. R. and Song, G. L. and Davis, B.},
abstractNote = {We studied the pure oxidation of Mg, Mg–3Al–1Zn (AZ31B), and Mg–1Zn–0.25Zr–<0.5Nd (ZE10A) at 85 °C in humid air using sequential exposures with H218O and D216O for water vapor. Incorporation of 18O in the hydroxide/oxide films indicated that oxygen from water vapor participated in the reaction. Moreover, penetration of hydrogen into the underlying metal was observed, particularly for the Zr- and Nd-containing ZE10A. Isotopic tracer profiles suggested a complex mixed inward/outward film growth mechanism.},
doi = {10.1016/j.scriptamat.2015.04.032},
journal = {Scripta Materialia},
number = C,
volume = 106,
place = {United States},
year = {2015},
month = {5}
}