Article ID Journal Published Year Pages File Type
5439891 Corrosion Science 2017 35 Pages PDF
Abstract
In the present work the electrochemical corrosion behaviour of iron aluminide single crystals from a binary Fe3Al alloy in 0.5 M H2SO4 containing naturally dissolved O2 was investigated. The single crystal samples used in the experiments had surface orientations parallel to the low-index planes (100), (110) and (111) and were analysed by potentiodynamic polarization as well as electrochemical impedance spectroscopy. The results obtained showed that corrosion rates followed the trend (100) < (110) ≈ (111). Examination of the corroded surfaces revealed the presence of distinct patterns on each single crystal which indicated that the dissolution process was influenced by surface crystallography.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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