Published: 2021-07-09

Page: 25-31


Department of Mechanical Engineering, Abia State University, Uturu, Nigeria.


Department of Mechanical Engineering, Abia State Polytechnic, Aba. Abia State, Nigeria.

*Author to whom correspondence should be addressed.


Inhibition of corrosion of aluminium alloy AA8011in 1.0 M Hydrochloric acid (HCl)by Moringa oleifera (MO) leaves extract has been studied using weight loss and electrochemical techniques. A summary of corrosion rate at different concentrations over a range of time proved 0.5g/L concentration to give the least rate of corrosion for this grade of aluminium alloy. It was inferred from the obtained results that Moringa oleifera has inhibitory effect on aluminium alloy corrosion. In addition, the Nyquist plots of aluminium alloy for different concentrations of Moringa oliefera leaves extract were obtained through the Electrochemical Impedance Spectroscopy (EIS) method. The electrochemical impedance measurements confirmed the inhibitive nature of Moringa oleifera leaves extract on the corrosion of aluminium alloy as the corrosion current density decreased with increased in concentration of the extract. Furthermore, for potentiodynamic polarization measurement of aluminium alloy, Tafel polarization technique results showed that the extract acted as a mixed type inhibitor. Based on the obtained results, Moringa oleifera leaves extract is a good inhibitor of aluminium corrosion in acidic medium. Hence, the implementation of this research findings will account for effective management of manufacturing sectors where metals such as aluminium alloys are in use.

Keywords: Aluminium alloy AA8011, Moringa oleifera, electrochemical analysis, tafel polarization technique, weight loss.

How to Cite

PRINCEWILL, N. C., & IKECHUKWU, M. K. (2021). SUSTAINABILITY OF ALUMINIUM ALLOY AA8011 STRUCTURAL INTEGRITY USING Moringa Olifera LEAVES EXTRACT. Journal of Global Ecology and Environment, 11(4), 25–31. Retrieved from


Download data is not yet available.


Ungureanu CA, Das S, Jawahir IS. Life-cycle cost analysis: Aluminum versus steel in passenger cars. TMS (the Minerals, Metals and Materials Society). 2007;11-24.

Hartley J. The increasing use of aluminium: Prospects and implications. European Commission. 1996;1-10.

Bruna M, Sládek A. Hydrogen analysis and effect of filtration on final quality of castings from aluminium alloy AlSi7Mg0. 3. Archives of Foundry Engineering. 2011;11:5-10.

Nappi C. The global aluminum industry 40 years from 1972; 2013.
Available: an_outlook_of_the_global_aluminum_industry_1972_-_present_day.pdf

Davis JR. Corrosion: Understanding the basics. Asm International. 2000;92-102.

Winston RE. Analysis of corrosion pitting by extreme-value statistics and its application to oil well tubing caliper surveys. Corrosion. 2000;13:67-76.

Nnanna LA, Owate IO. An interesting and efficient green corrosion inhibitor for aluminum from extracts of moringa oleifera in acidic solution. Scientia Africana. 2014;13:52-63.

Imohiosen O, Gurama HH, Lamidi TB. Phytochemical and antimicrobial studies on Moringa oleifera leaves extracts. IOSR Journal of Environmental Science, Toxicology and Food Technology. 2014;8(1):39-45.

Allaoui M, Rahim O, Sekhri L. Electrochemical study on corrosion inhibition of iron in acidic medium by Moringa Oleifera extract. Oriental Journal of Chemistry. 2017; 33:637-646.

Aribo S, Olusegun SJ, Ibhadiyi LJ, Oyetunji A, Foloruns DO. Green inhibitors for corrosion protection in acidizing oilfield environment. Journal of the Association of Arab Universities for Basic and Applied Sciences. 2017;24:34-38.

Mejeh KI, Isaac OE, Oparadike FE, Luke AA. Study of Corrosion Inhibitive Behaviour of Moringa oleifera Leaf Extract on Mild Steel. Journal of Newviews in Engineering and Technology (JNET). 2020; 2(2):21-28.

Singh A, Lin Y, Ebenso E, Liu W, Pan J, Huang B. Gingko biloba fruit extract as an eco-friendly corrosion inhibitor for J55 steel in CO2 saturated 3.5% NaCl solution. Journal of Industrial and Engineering Chemistry. 2015;24: 219-228.

Omotosho OA. Inhibition evaluation of chemical and plant extracts on the corrosion of metallic alloys in Acidic Environment. Ph.D. dissertation, Covenant University, Nigeria; 2016.

Szklarska-Smiaiowska Z. Electrochemical and optical techniques for the study of metallic corrosion. Kluwer Academic, the Netherlands. 1991;203:545-570.

Bouoidina A, El Hajjaji F, Chaouch M, Abdellaoui A, Elmsellem H, Rais Z. Inhibition of mild steel corrosion using the extract of Foeniculum vulgare in acid medium. Der Pharma Chemica. 2016;8:149-157.