Investigation of corrosion inhibition of C38 steel in 5.5 M H3PO4 solution using Ziziphus lotus oil extract: an application model
| Autor: | Mourad Harir, Aimad Mazkour, Souad El Hajjaji, Walid Belmaghraoui, Hicham Harhar |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Tafel equation
Materials science Carbon steel biology 020209 energy General Chemical Engineering 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology biology.organism_classification Dielectric spectroscopy Corrosion Palmitic acid chemistry.chemical_compound chemistry 0202 electrical engineering electronic engineering information engineering engineering Ziziphus lotus General Materials Science 0210 nano-technology Polarization (electrochemistry) Phosphoric acid Nuclear chemistry |
| Zdroj: | Anti-Corrosion Methods and Materials. 66:121-126 |
| ISSN: | 0003-5599 |
| DOI: | 10.1108/acmm-02-2018-1901 |
| Popis: | Purpose This study aims to investigate the corrosion inhibition effect of extracted oil from Ziziphus lotus fruit on corrosion of C38 carbon steel in 5.5 M H3PO4 solution using potentiodynamic polarization and impedance techniques. Design/methodology/approach Oil composition was determined using gas chromatography, and the results showed that oleic and palmitic acids present approximately 84.0 per cent of its total chemical content. Electrochemical impedance spectroscopy (EIS) data were analyzed by adapting it to a well-developed electric circuit model. The inhibition efficiency of Z. lotus oil was calculated and compared using Tafel polarization and EIS. Findings Accordingly, the oil extract was found to act as an anodic type inhibitor. Furthermore, inhibition efficiency of Z. lotus oil extract increase with oil concentrations and achieve approximately 70.5 per cent at 3 g/L solution of Z. lotus oil. Originality/value The results obtained from different tested methods were in line, and the oil was able to reduce significantly the kinetics of the corrosion process of C38 carbon steel. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|