Tracer study of oxygen and hydrogen uptake by Mg alloys in air with water vapor. (September 2015)

• Record Type: Journal Article
• Authors: 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.
• Is Part Of: Scripta materialia. Volume 106(2015)
• Page Start: 38
• Page End: 41
• Publication Date: 2015-09
• Subjects: Magnesium alloys -- Oxidation -- Hydrogen diffusion -- Secondary ion mass spectroscopy (SIMS) -- Water vapor; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.04.032
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: Abstract : The oxidation of pure Mg, Mg–3Al–1Zn (AZ31B), and Mg–1Zn–0.25Zr–<0.5Nd (ZE10A) was studied at 85 °C in humid air using sequential exposures with H2 18 O and D2 16 O for water vapor. Incorporation of 18 O in the hydroxide/oxide films indicated that oxygen from water vapor participated in the reaction. 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.