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Polyaniline-lignosulfonate/epoxy coating for corrosion protection of AA2024-T3
journal contribution
posted on 2023-11-03, 04:49 authored by G Gupta, N Birbilis, AB Cook, AS KhannaCorrosion protection arising from epoxy coatings incorporating lignosulfonate-doped polyaniline (Pani-LGS) upon AA2024-T3 was studied in 0.6. M NaCl. Synthesized Pani-LGS particles were investigated using TEM, FTIR, TGA and conductivity, whilst coatings were also physically examined using SEM. The coating performance was studied using a combination of potentiodynamic polarisation, EIS, FTIR spectroscopy and X-ray photoelectron spectroscopy. The performance of Pani-LGS/epoxy blends is discussed more generally, with tests revealing that on exposure to 0.6. M NaCl solution for 30. days, a 5. wt% Pani-LGS/epoxy coating resulted in low levels of corrosion. A mechanism for the postulated mode of corrosion protection is presented. © 2012 Elsevier Ltd.
History
Journal
Corrosion ScienceVolume
67Pagination
256-267Publisher DOI
ISSN
0010-938XeISSN
1879-0496Language
EnglishPublisher
PERGAMON-ELSEVIER SCIENCE LTDUsage metrics
Keywords
Science & TechnologyTechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringMaterials ScienceAluminumEISPolarisationPolymer coatingsAnodic protectionLOW-CARBON STEELALUMINUM-ALLOYDOPED POLYANILINECONDUCTING POLYMERSEPOXY-RESINMILD-STEELEMERALDINE BASEBEHAVIORCOMPOSITESINHIBITION
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