Journal
MATERIALS
Volume 11, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/ma11020292
Keywords
polymer coatings; polyaniline; aluminum; EIS
Categories
Funding
- National Natural Science Fund of China [51622106]
- National Key Basic Research and Development Plan of China [2014CB643303]
- National Key Research and Development Program of China [2017YFB0702303]
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Epoxy coatings incorporating different content of sulfosalicylic acid doped polyaniline (PANI-SSA) have been investigated for corrosion protection of 5083 aluminum alloy in 3.5% NaCl solution. The performance of the coatings is studied using a combination of electrochemical impedance spectroscopy (EIS), open circuit potential (OCP), gravimetric tests, adhesion tests, scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The results demonstrate that the content of PANI-SSA not only affects the coating compactness and the transportation of aggressive medium, but also has a significant influence on the-based aluminum. The coating with 2 wt. % PANI-SSA exhibits the best corrosion inhibition due to its good protective properties and the formation of a complete PANI-SSA induced oxide layer.
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