• E. E. Ajike Physics Department, Clifford University, Owerrinta Nigeria
  • A. N. Lebe Physics Department, Michael Okpara University of Agriculture, Umudike, Nigeria
  • E. C. Nwaokorongwu Physics Department, Michael Okpara University of Agriculture, Umudike, Nigeria
  • K. D. Ogwo Physics Department, Rhema University, Aba, Nigeria
  • C. Y. Ahamfula Physics Department, Gregory University, Uturu, Nigeria



Adsorption, Inhibitor, Aluminum, Temperature, Phytochemical, Isotherm, Efficiency, Corrosion


The application of  corrosion inhibitors is a more effective strategy tomitigate the impacts of aluminum corrosion. Phytochemical analysis, gravimetric technique, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were used to investigate the inhibitory potentials of Garcinia kola aqueous leave extract for the corrosion of aluminum alloy (AA4007) in 1 M NAOH. The highest inhibition efficiency obtained was 98.5%.   The result from the analyses collaborated that the leaf extract is a good inhibitor. The Langmuir,  Freundlich and Temkin isotherm is in agreement that the inhibitor is physisorption. Garcinia kola showed high corrosion inhibition efficiency on aluminum alloy.


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Chemical, Industrial, Materials, Mechanical, Metallurgical, Petroleum & Production Engineering

How to Cite

INHIBITIVE PROPERTIES OF Garcinia kola (GK) IN ALKALINE MEDIUM  OF ALUMINUM ALLOY (AA4007). (2024). Nigerian Journal of Technology, 43(2).