Investigation on corrosion protection mechanism of polyaniline nanoparticles doped with phosphoric acid by scanning Kelvin probe and other electrochemical methods

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• 作者：Ghasem Ebrahimi^a ; Fereshteh Rezaei^b ; ^{rezaeif@ripi.ir} ; Jaber Neshati^a
• 关键词：Polyaniline nanoparticles ; Phosphoric acid dopant ; Scanning Kelvin probe ; Surface Volta potential ; Epoxy Novolac
• 刊名：Journal of the Taiwan Institute of Chemical Engineers
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：70
• 期：Complete
• 页码：427-436
• 全文大小：2623 K
• 卷排序：70

文摘

Corrosion protection was improved in presence of Polyaniline nano particles. PANs could oxidize the steel and shift the steel potential to passive state. OCP, polarization and SKP measurements confirm the passivation of steel. Volta potential coefficient of variations (CV) was introduced as a key index. CV of Volta potential was used for assessing corrosion uniformity beneath coatings.