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TitleMechanical and electrochemical deterioration mechanisms in the tribocorrosion of Al alloys in NaCl and in NaNO3 solutions
Author(s)Vieira, A. C.
Rocha, L. A.
Papageorgiou, Nikolaos
Mischler, S.
KeywordsA. Al-Si-Cu-Mg alloy
C. Tribocorrosion
C. Galvanic coupling
Modeling studies
A. Aluminum
B. Modeling studies
Issue date2012
PublisherPergamon-Elsevier Science Ltd
JournalCorrosion Science
Abstract(s)Tribocorrosion of Al-Si-Cu-Mg alloys was investigated in 0.05 M NaCl and 0.1 M NaNO3 solutions under severe sliding and controlled electrochemical conditions. A simple galvanic coupling model was developed to analyze and quantitatively predict the evolution potential of the open circuit potential during tribocorrosion. According to this model and the obtained results, galvanic coupling was established in the NaNO3 solution within the wear track between passive and mechanically depassivated areas. In the NaCl solution, galvanic coupling was established between the whole depassivated wear track and the surrounding area. This difference was attributed to different mechanical properties of the passive surfaces.
Publisher version
AccessOpen access
Appears in Collections:CT2M - Artigos em revistas de circulação internacional com arbitragem científica

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