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Localised Measurements of pH and Dissolved Oxygen as Complements to SVET in the Investigation of Corrosion at Defects in Coated Aluminum Alloy
Author(s) -
Bastos A. C.,
Karavai O. V.,
Zheludkevich M. L.,
Yasakau K. A.,
Ferreira M. G. S.
Publication year - 2010
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201000076
Subject(s) - corrosion , alloy , materials science , aluminium , characterization (materials science) , oxygen , electrode , metallurgy , chemical engineering , nanotechnology , chemistry , organic chemistry , engineering
This paper presents measurements of local pH and local oxygen reduction current performed to complement SVET (Scanning Vibrating Electrode Technique) in the characterization of the chemical environment near artificial defects on coated 2024‐T3 aluminum alloy during corrosion and inhibition. The main purpose is to give examples on how micropotentiometry and microamperometry can add supplementary information to SVET, providing important insights for the understanding of corrosion mechanisms and inhibition processes necessary to develop effective self‐healing coatings.