Protective Behavior of Poly(m-aminophenol) and Polypyrrole Coatings on Mild Steel

Electrodeposition of polypyrrole (PPy) and poly (m-aminophenol) (PMAP) films on mild steel (MS) substrate was achieved in 0.3M oxalic acid solution and 0.3M NaOH, water:ethanol (70:30) solvent respectively using cyclic voltammetry technique. The morphology of the films constructed was determined by...

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Published inIOP conference series. Materials Science and Engineering Vol. 290; no. 1; pp. 12079 - 12086
Main Authors Yahaya, Sabrina M, Harun, M K, Rosmamuhamadani, R., Bonnia, N N, Ratim, S
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2018
Subjects
Anodic coatings
Anodic polarization
Anodic protection
Aqueous solutions
Cathodic coating (process)
Cathodic protection
Coated electrodes
Corrosion prevention
Electron microscopes
Ethanol
Low carbon steels
Morphology
Oxalic acid
Polyaminophenol
Polymer films
Polypyrroles
Protective coatings
Substrates
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Summary:Electrodeposition of polypyrrole (PPy) and poly (m-aminophenol) (PMAP) films on mild steel (MS) substrate was achieved in 0.3M oxalic acid solution and 0.3M NaOH, water:ethanol (70:30) solvent respectively using cyclic voltammetry technique. The morphology of the films constructed was determined by scanning electron microscope (SEM) while energy dispersive X-Ray analyzer (EDX) was used to establish the presence of organic PMAP and PPy film coating and its compositions. The corrosion performance of MS coated with both polymer films were investigated after 0.5 hours immersed in 0.5M NaCl aqueous solution by using polarization curves. It was found that PPy coating provides anodic protection while PMAP coating provides cathodic protection towards corrosion protection of mild steel substrate.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/290/1/012079