Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7896174 | Corrosion Science | 2013 | 13 Pages |
Abstract
Site-specific analytical electron microscopy was performed on a corroded sand-cast AM50 alloy. Areas close to partially divorced eutectic were the regions with less corrosion damage. The corrosion product layer in these areas consisted of a columnar section of predominantly amorphous MgO. At the alloy interface, an aluminum-rich layer was identified. Electron energy-loss spectroscopy suggests this layer is metallic in character. The corrosion product film on the primary α-Mg grains possessed a bi-layer morphology: a thin columnar film and a thicker, porous sub-layer. The formation of the Al-rich layer depends on the Al content in solid solution at a specific location.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mohsen Danaie, Robert Matthew Asmussen, Pellumb Jakupi, David W. Shoesmith, Gianluigi A. Botton,