Journal
SURFACE ENGINEERING
Volume 36, Issue 8, Pages 877-888Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02670844.2020.1730061
Keywords
Epoxy coating; graphene oxide; polyaniline; anti-corrosive properties
Categories
Funding
- National Natural Science Foundation of China [U1805253]
- Science and Technology Project of Fujian Province [2018HZ0001-1]
- Xiamen Municipal science and technology project [3502Z20171002]
Ask authors/readers for more resources
Polyaniline/graphene oxide (GON-An) composites were synthesized by chemically grafting p-phenylenediamine (PPDA)-modified graphene oxide (GO) with polyaniline (PANI), which was confirmed by FT-IR, XRD, SEM, TEM, Raman spectroscopy, and XPS analyses. The electrochemical impedance spectroscopy test, brine immersion, and Tafel slopes analysis revealed that compared with GO and PPDA-modified GO (GON), GON-An composites which combined the unique corrosion resistance of both PANI and GO exhibited relatively obvious superiority in improving the corrosion resistance of epoxy coating with the same contents. After being immersed in brine for 35 days, the composite epoxy coating containing 1 wt-% of GON-An(1:2) composites in which the mass ratio of GO and PANI was 1:2, possessed a high impedance of 4x10(9) omega cm(2), a high corrosion potential of -0.25 V, and a low corrosion current of 4.119x10(-11) A cm(-2). Furthermore, the anti-corrosive mechanisms of PANI/GO epoxy coatings were discussed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available