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Journal of Chemistry
Volume 2016, Article ID 6208937, 7 pages
Review Article

Recent Natural Corrosion Inhibitors for Mild Steel: An Overview

1Department of Chemical and Processing Engineering, Manicaland College of Applied Sciences, Private Bag 9055, Senga Road, Gweru, Zimbabwe
2Department of Chemical Technology, Midlands State University, Private Bag 9055, Senga Road, Gweru, Zimbabwe

Received 11 March 2016; Accepted 26 June 2016

Academic Editor: Murat Senturk

Copyright © 2016 Marko Chigondo and Fidelis Chigondo. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Traditionally, reduction of corrosion has been managed by various methods including cathodic protection, process control, reduction of the metal impurity content, and application of surface treatment techniques, as well as incorporation of suitable alloys. However, the use of corrosion inhibitors has proven to be the easiest and cheapest method for corrosion protection and prevention in acidic media. These inhibitors slow down the corrosion rate and thus prevent monetary losses due to metallic corrosion on industrial vessels, equipment, or surfaces. Inorganic and organic inhibitors are toxic and costly and thus recent focus has been turned to develop environmentally benign methods for corrosion retardation. Many researchers have recently focused on corrosion prevention methods using green inhibitors for mild steel in acidic solutions to mimic industrial processes. This paper provides an overview of types of corrosion, corrosion process, and mainly recent work done on the application of natural plant extracts as corrosion inhibitors for mild steel.