Journal
CORROSION SCIENCE
Volume 51, Issue 12, Pages 2906-2915Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2009.08.012
Keywords
EIS; XPS; Paint coating
Funding
- National Natural Science Foundation of China [50771038, 50601007]
- Ministry of Science and Technology of China [2005DKA10400]
- Key Laboratory of Superlight Material and Surface Technology (Harbin Engineering University)
- Ministry of Education
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The protective ability of epoxy coating containing polyaniline (PANI coating) on Mg-5Li alloy in 3.5% NaCl aqueous solution has been studied by means of EIS and electrochemical noise measurements (EN). The results of EN and EIS revealed that the PANI coating protected Mg-5Li alloy from corrosion perfectly. XPS results indicated that the presence of polyaniline changed the chemical structure of the corrosion film on the alloy surface. An analysis of the electrochemical noise data based on stochastic analysis indicated that the corrosion growth probability of Mg-5Li alloy beneath the coating was decreased by the addition of polyaniline. (C) 2009 Elsevier Ltd. All rights reserved.
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