Performance of the novel corrosion inhibitor based on Cetamine to protect mild steel in surface water solution: electroc
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ORIGINAL PAPER
Performance of the novel corrosion inhibitor based on Cetamine to protect mild steel in surface water solution: electrochemical and surface studies Mostafa Doubi1 · Said Abbout1,2 · Hamid Erramli1 · Ahmed Dermaj1 · Driss Chebabe1,2 · Rachid Touir3 · Najat Hajjaji1 · Amar Biari1 Received: 22 July 2020 / Accepted: 3 November 2020 © Institute of Chemistry, Slovak Academy of Sciences 2020
Abstract A pumping station located in the Moulouya River in Morocco, Northern Africa suffered from extensive corrosion damage. Therefore, in this paper, the inhibition efficiency of Cetamine (CE) for mild steel exposed in water of Moulouya River was examined. This study was performed using electrochemical measurements and surface analysis. The results of potentiodynamic polarization measurements indicated that the CE compound classifies as a cathodic inhibitor type for 500 and 700 ppm, while it acts as a mixed inhibitor type at 1000 ppm CE. It is obtained also that the inhibition efficiency increases with CE concentrations to reach an optimum value of 98% at 1000 ppm CE. In addition, the impedance spectroscopy measurements indicated that this behavior can be explained by the formation of a protective film on the electrode surface. However, this study showed that the CE product takes its performance against aggressive water under various conditions (high Cl− concentration ions, electrode rotation rate, temperature, and immersion time). Keywords Cetamine · Surface water · Corrosion inhibition · Electrochemical measurements · SEM/EDAX analysis
Introduction A surface water pumping system, carrying water from the Moulouya River in Morocco, Northern Africa suffered extensive mild steel corrosion due to the presence of aggressive ions (Touir et al. 2008). Thus, resulting corrosion damage and scaling can potentially have an adverse effect on the system performance (Mohammadi and Rahsepar 2019). Thus, the use of chemical corrosion inhibitors is the most widely used method to minimize this type of corrosion damage. Therefore, the selection criteria for different inhibitors
* Said Abbout [email protected]; [email protected] 1
Laboratory of Materials, Electrochemistry and Environment, Faculty of Sciences, University Ibn Tofail, Kenitra, Morocco
2
Laboratory of Natural Substances and Synthesis and Molecular Dynamic, Faculty of Sciences and Techniques, Moulay Ismail University of Meknes, BP 509, Boutalamine, 52000 Errachidia, Morocco
3
Regional Center for Education and Training Professions (CRMEF), Kenitra, Morocco
include cost effectiveness, low concentration as well as continuous recirculation (Hsissou et al. 2020). Water chemistry has an effect on the life of the materials. Medium compositions change with the precipitation amount and along river, which present a particularity of such system. For this, many green organic compounds were investigated for the protection of mild steel in several media, using electrochemical measurements and surfaces analyses (Yaro et al. 2011, 2013; Hassan et al. 2016; Kh
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