Article ID Journal Published Year Pages File Type
7897345 Corrosion Science 2012 12 Pages PDF
Abstract
► Spreading of intergranular corrosion on heat treated and sensitized Al-Mg alloys was investigated. ► Only a subset of all grain boundaries containing β-phase dissolve and form pits in NaCl solutions. ► Subsequently, attack of β-phase at other grain boundaries is triggered causing corrosion spreading. ► The “breakdown potential” in upward polarization scans is a potential associated with IGC spreading. ► The breakdown potential does not correspond to random pitting of less noble phases.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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