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TitleTemperature dependence of the pitting potential of high purity aluminium in chloride containing solutions
Publication TypeJournal Article
Year of Publication2011
AuthorsSoltis, J., Laycock N.J., and Krouse D.P.
JournalCorrosion Science
Pagination7 - 10
Date Published2011
ISSN0010938X (ISSN)
KeywordsA. Aluminium, aluminum, B. Polarization, C. Pitting corrosion, Charge passed, Chloride concentrations, Chlorine compounds, High purity, Higher temperatures, Linear relationships, Pitting, Pitting potential, Polarization, Polarization experiments, temperature dependence, Transition point
AbstractSlow scan anodic polarization experiments were conducted on high purity (99.99%) aluminium exposed to chloride containing solutions at temperatures ranging from 1 to 70 °C. The total anodic charge passed prior to stable pitting shifts towards higher values with increasing chloride concentration and there is a transition point at 30 °C above which a significantly greater amount of charge is involved. For all chloride concentrations, the pitting potential decreases with temperature according to a linear relationship, and also shows a transition at approximately 30 °C, with a much steeper decrease observed for the higher temperatures. Possible explanations for these two effects are discussed. © 2010 Elsevier Ltd.

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