| Effect of Pyrrole and N-Methylpyrrole Coatings on Corrosion Resistance of Mild Steel |
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| 引用本文： | Ali Ashrafi,M.A.Golozar,S.Mallakpour,Ali Ghasemi. Effect of Pyrrole and N-Methylpyrrole Coatings on Corrosion Resistance of Mild Steel[J]. 材料热处理学报, 2004, 25(5) |
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| 作者姓名： | Ali Ashrafi M.A.Golozar S.Mallakpour Ali Ghasemi |
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| 作者单位： | Department of Materials Engineering，Isfahan University of Technology，Isfahan，84154，Iran，Department of Materials Engineering，Isfahan University of Technology，Isfahan，84154，Iran，Organic Polymer Chemistry Research Laboratory，College of Chemistry，Isfahan University of Technology，Isfahan，84156，Iran，Department of Materials Engineering，Isfahan University of Technology，Isfahan，84154，Iran，Organic Polymer Chemistry Research Laboratory，College of Chemistry，Isfahan University of Technology，Isfahan，84156，Iran |
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| 基金项目： | 伊斯法罕理工大学校科研和教改项目 |
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| 摘 要： | COATING ON THE SURFACE of metals bypolymeric materials have been widely used inindustries for the protection of this materials against ofcorrosion[1-4].Electropolymerization is an effective technique forthe surface coating of various conductive materialswith wide variety of polymers with various thick nesses[5].Recently,electropolymerization of pyrrole on steelsubstrates has been investigated with the aim ofproducing uniform and strongly adherent coatings[6-9].It was found that only lim…
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Effect of Pyrrole and N-Methylpyrrole Coatings on Corrosion Resistance of Mild Steel |
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| Ali Ashrafi,M.A.Golozar,S.Mailakpour,Ali Ghasemi. Effect of Pyrrole and N-Methylpyrrole Coatings on Corrosion Resistance of Mild Steel[J]. Transactions of Materials and Heat Treatment, 2004, 25(5) |
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| Authors: | Ali Ashrafi M.A.Golozar S.Mailakpour Ali Ghasemi |
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| Affiliation: | 1. Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84154, Iran
2. Organic Polymer Chemistry Research Laboratory, College of Chemistry, Isfahan University of Technology, Isfahan, 84156, Iran |
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| Abstract: | Electrochemical polymerizations of various ratios of pyrrole and methylpyrrole monomers were performed in aqueous toluene-4-sulfinic acid sodium salt (T4SNa) electrolyte, using galvanostatic method. pH of electrolyte was adjusted by p-toluene sulfonic acid (PTSA). In order to prevent corrosion of mild steel substrates during coating deposition, specimens were pretreated in 0.5M oxalic acid solution, employing galvanostatic method. This would passivate the steel substrate and facilitate the coating process as well. Corrosion resistance of coated substrates was investigated in 1M NaCl solution using Tafel polarization technique. In addition, using scanning electron microscopy (SEM), morphological characterization of coatings produced, was investigated. Regarding the corrosion characteristics, results obtained revealed that the ratio of 1 to 1 (Pyrrole/Methylpyrrole) could play an important role. |
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| Keywords: | Conductive polymer electropolymerization pyrrole N-methylpyrrole corrosion |
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