Investigative Study Of The Inhibitive Properties Of Some Extracts In Acidic And Alkaline Media Of Aluminum Alloy (AA4007):- Emea, Ajike E
ABSTRACT
The effectiveness of Garcinia kola and Irvingia
gabonensis leaves extract in inhibiting aluminum corrosion in 1M HCL and 1M
NaOH media were investigated. The phytochemical analyses of Garcinia kola and Irvingia gabonensis extracts revealed that they contain
phytochemicals such as Saponin, Alkaloid, Flavonoid and Tannin. The gravimetric
method, thermodynamic isotherms, potentiodynamic polarization (PDP) and
Electrochemical impedance spectroscopy (EIS) were adopted in this research
work. According to this study, the corrosion rate increases with increasing
temperature and reduces when the plant extracts were introduced in both acidic and
alkaline media. It was also observed that the effectiveness of both Garcinia kola and Irvingia gabonensis’s inhibition efficiency decreases with rising
temperature and increases with respect to concentration and exposure time. For Irvingia gabonensis in 1M HCL, the
highest inhibition efficiency was observed to be 98.99% for Irvingia gabonensis in 1M NaOH, It was
observed to be 72.92% at g/L concentration. For Garcinia kola in 1M HCL, the inhibition
efficiency was observed to be 99.38% at 1.0 g/L concentration for Garcinia kola in 1M NaOH, that there was
no observable inhibition efficiency possibly because the molecules of the Garcinia kola is not in tandem with the
molecules of 1MNaOH which may have caused desorption at the surface of the
aluminum alloy. The results obtained in the PDP and EIS correlates with the
gravimetric results, which is an indication that both Irvingia gabonensis and
Garcinia kola are organic inhibitor of corrosion
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AJIKE, E (2024). Investigative Study Of The Inhibitive Properties Of Some Extracts In Acidic And Alkaline Media Of Aluminum Alloy (AA4007):- Emea, Ajike E . Repository.mouau.edu.ng: Retrieved Sep 07, 2024, from https://repository.mouau.edu.ng/work/view/investigative-study-of-the-inhibitive-properties-of-some-extracts-in-acidic-and-alkaline-media-of-aluminum-alloy-aa4007-emea-ajike-e-7-2
EZIYI, AJIKE. "Investigative Study Of The Inhibitive Properties Of Some Extracts In Acidic And Alkaline Media Of Aluminum Alloy (AA4007):- Emea, Ajike E " Repository.mouau.edu.ng. Repository.mouau.edu.ng, 22 Jul. 2024, https://repository.mouau.edu.ng/work/view/investigative-study-of-the-inhibitive-properties-of-some-extracts-in-acidic-and-alkaline-media-of-aluminum-alloy-aa4007-emea-ajike-e-7-2. Accessed 07 Sep. 2024.
EZIYI, AJIKE. "Investigative Study Of The Inhibitive Properties Of Some Extracts In Acidic And Alkaline Media Of Aluminum Alloy (AA4007):- Emea, Ajike E ". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 22 Jul. 2024. Web. 07 Sep. 2024. < https://repository.mouau.edu.ng/work/view/investigative-study-of-the-inhibitive-properties-of-some-extracts-in-acidic-and-alkaline-media-of-aluminum-alloy-aa4007-emea-ajike-e-7-2 >.
EZIYI, AJIKE. "Investigative Study Of The Inhibitive Properties Of Some Extracts In Acidic And Alkaline Media Of Aluminum Alloy (AA4007):- Emea, Ajike E " Repository.mouau.edu.ng (2024). Accessed 07 Sep. 2024. https://repository.mouau.edu.ng/work/view/investigative-study-of-the-inhibitive-properties-of-some-extracts-in-acidic-and-alkaline-media-of-aluminum-alloy-aa4007-emea-ajike-e-7-2