The para hydroxy acetanilide and acetanilide mixture for the protection from corrosion of alloyed zinc
| Autor: | Karima Dob, Emna Zouaoui, Mohamed Salah Medjram, Daoiya Zouied, Olfa Olfa Chikha |
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| Rok vydání: | 2018 |
| Předmět: |
Auxiliary electrode
Working electrode Chemistry 020209 energy General Chemical Engineering Inorganic chemistry chemistry.chemical_element 02 engineering and technology Zinc 021001 nanoscience & nanotechnology Reference electrode Corrosion chemistry.chemical_compound Saturated calomel electrode 0202 electrical engineering electronic engineering information engineering General Materials Science 0210 nano-technology Polarization (electrochemistry) Acetanilide |
| Zdroj: | Anti-Corrosion Methods and Materials. 65:1-10 |
| ISSN: | 0003-5599 |
| DOI: | 10.1108/acmm-02-2017-1754 |
| Popis: | Purpose Corrosion and corrosion inhibition of alloyed zinc electrode were investigated in neutral chloride solution using electrochemical techniques. The purpose of this study is to study the corrosion inhibition of acetanilide and para hydroxy acetanilide as organics inhibitors for corrosion control of alloyed zinc electrode in NaCl 3 per cent solution. Design/methodology/approach A volt lab PGZ 301, assembled using alloyed zinc working electrode, a platinum counter electrode and a saturated calomel electrode as the reference electrode, was used in the experiment. This research was conducted using potentiodynamic polarization and electrochemical impedance spectroscopy techniques. Findings Acetanilide, para hydroxy acetanilide and their mixture provided inhibitions efficiencies of 88 per cent at 40 ppm, 87 per cent with 80 ppm and 99.86 per cent with (40 ppm AC + 80 ppm PHA), respectively. The study also discusses the corrosion inhibition mechanism of the protective layers. The adsorption of acetanilide and para hydroxy acetanilide on metal surface obeyed Langmuir’s adsorption isotherm. Polarization measurements showed that the acetanilide and the para hydroxy acetanilide, and their mixture acted as cathodic inhibitors in NaCl solution, and the inhibitor molecules followed physical adsorption on the surface of alloyed zinc. Originality/value The other new inhibitors which are very efficient inhibitors and to be applied in the field of prevention and control against corrosion. |
| Databáze: | OpenAIRE |
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