A preliminary quantitative XPS study of the surface films formed on pure magnesium and on magnesium-aluminium intermetallics by exposure to high-purity water

Liu, M., Zanna, S., Ardelean, H., Frateur, I., Schmutz, P., Song, G.L., Atrens, A. and Marcus, P. (2009) A preliminary quantitative XPS study of the surface films formed on pure magnesium and on magnesium-aluminium intermetallics by exposure to high-purity water. Materials Science Forum, 618-619 : 255-262.


Author Liu, M.
Zanna, S.
Ardelean, H.
Frateur, I.
Schmutz, P.
Song, G.L.
Atrens, A.
Marcus, P.
Title A preliminary quantitative XPS study of the surface films formed on pure magnesium and on magnesium-aluminium intermetallics by exposure to high-purity water
Journal name Materials Science Forum    (ERA 2010 Rank C)   Check publisher's open access policy
Publication date 2009-04-17
Sub-type Article
Year available 2009
Volume number 618-619
ISBN *****************
ISSN 0255-5476
Start page 255
End page 262
Total pages 8
Editor Dargusch, M.
Keay, S.
Wohlbier, F.H.
Murch, G.
Mai, Y-W.
Place of publication Switzerland
Publisher TransTech Publications
Collection year 2010
Language eng
Subject 8612 Fabricated Metal Products
0912 Materials Engineering
C1
Abstract An XPS investigation was carried out on the surface film formed by exposure to high-purity water. on mechanically polished Mg and the two Mg-Al intermetallic compounds: Al3Mg2 and Mg17Al12, The result for mechanically polished pure Mg indicates that a film of MgO covered by a Mg(OH)2 layer, formed by the reaction of MgO with water vapour in the air. On immersion in distilled water, this film was hydrated to a duplex film with an inner MgO layer next to the Mg metal and an external porous layer of hydroxide. For both intermetallics, there was preferential dissolution of magnesium from the mechanically ground surface and also during aqueous immersion. After immersion, there was a 10 nm thick, stable film on the surface; the film composition on Al3Mg2 Was AlMg1.4O0.2(OH)(5.4) that on Mg17Al12 was AlMg2.5(OH)(8).
Keyword Mg surface modification
Intermetallics
Xps
Magnesium
Q-Index Code C1
Q-Index Status Confirmed Code

 
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Created: Mon, 08 Mar 2010, 12:32:37 EST by Sally Beard on behalf of School of Mechanical and Mining Engineering