Corrosion processes controlled by phosphonic acid nano-layers

Talah Abohalkuma, A. Shaban, J. Telegdi

Research output: Contribution to journalArticle

Abstract

Self assembled monolayers (SAM) formed by fluorophosphonic and undecenyl-phosphonic acids on carbon steel surfaces as anticorrosive nanocoatings were investigated. The anticorrosive efficacy of these SAM layers was followed by atomic force microscopy, when the change in the surface morphology caused by layer deposition and corrosion processes was monitored. The corrosion process was determined by electrochemical potentiodynamic polarization and cyclic voltammetry. Results showed that both chemicals produced good protection against corrosion as anodic inhibitors specially with increasing the time of layer formation which results in a more compact molecular film. According to the AFM images, the fluoro-phosphonic acid self-assembled molecular layer can control the general as well as the pitting corrosion, but the SAM layers of the undecenyl-phosphonic acid cannot inhibit the pitting corrosion. The AFM measurements confirmed the electrochemical results.

Original languageEnglish
Pages (from-to)165-168
Number of pages4
JournalPeriodica Polytechnica: Chemical Engineering
Volume60
Issue number3
DOIs
Publication statusPublished - 2016

Fingerprint

Self assembled monolayers
Corrosion
Acids
Pitting
Phosphorous Acids
Potentiodynamic polarization
Corrosion protection
Corrosion inhibitors
Cyclic voltammetry
Carbon steel
Surface morphology
Atomic force microscopy
phosphonic acid

Keywords

  • Corrosion
  • Phosphonic acid
  • Self-assembled molecular (SAM)

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Corrosion processes controlled by phosphonic acid nano-layers. / Abohalkuma, Talah; Shaban, A.; Telegdi, J.

In: Periodica Polytechnica: Chemical Engineering, Vol. 60, No. 3, 2016, p. 165-168.

Research output: Contribution to journalArticle

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