A mini review on corrosion, inhibitors and mechanism types of mild steel inhibition in an acidic environment

• A. Kadhim¹, N. Betti², H.A. Al-Bahrani³, M.K.S. Al-Ghezi⁴, T. Gaaz⁵, A.H. Kadhum³ and A. Alamiery^4,6

¹ Laser and Optoelectronics Engineering Department, University of Technology, 10001, Baghdad, Iraq
² Materials Engineering Department, University of Technology, P.O. Box: 1001, Baghdad, Iraq
³ Al-Ameed University, P.O. Box: 1238, Karbalaa, Iraq
⁴ Energy and Renewable Energies Technology Center, University of Technology, 10001, Baghdad, Iraq
⁵ Technical College Al-Musaib, Al-Furat Al-Awsat Technical University, Al-Musaib, 51006, Babil, Iraq
⁶ Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, University Kebangsaan Malaysia (UKM), P.O. Box: 43000, Bangi, Selangor, Malaysia

Abstract: For a long period, there have been significant losses at high costs due to the corrosion and damage it causes in most industrial processes, especially in the oil and gas industries. Consequently, erosion represents a serious threat to humans and animals, as it has a catastrophic impact on the environment, which calls for permanent and final solutions to it, and therefore there is a lot of literature related to the issue of corrosion. Hence the importance of natural or synthetic organic corrosion inhibitors, as they are usually inexpensive and harmless because they biodegrade, as proven by previous studies. Organic molecules that contain a number of heterogeneous atoms and double and triple bonds in their molecular structures have a great ability to resist corrosion of metals in various corrosive solutions. Much research has been reported annually by many researchers related to corrosion inhibitors and their preparation or extraction as well as the mechanism of classification and inhibition. The current study represents the types of corrosion, types of inhibitors, mechanisms of action, measuring the corrosion inhibitor efficiency and a brief presentation of research articles that use manufactured or extracted coumarins as corrosion inhibitors, and a comparison between them in terms of inhibition effectiveness has also been made.

Keywords: corrosion types, mechanism, corrosion inhibitor, inhibition efficiency

Int. J. Corros. Scale Inhib., 2021, 10, no. 3, 861-884
doi: 10.17675/2305-6894-2021-10-3-2

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