Natural Products for Material Protection: Passivation Enhancing Potentials of Spondias Mombin as AISI 316L Corrosion Inhibitor in 3.5% NaCl Solution

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Raphael S. Oguike
Raphael S. Oguike
2
Omolara Oni
Omolara Oni
1 Abubakar Tafawa Balewa University

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Natural Products for Material Protection: Passivation Enhancing Potentials of Spondias Mombin as AISI 316L Corrosion Inhibitor in 3.5% NaCl Solution Banner
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The corrosion inhibition characteristics of Spondias mombin (SM) on stainless steel AISI 316L in 3.5% NaCl has been studied using gasometric, potentiodynamic polarization, surface and elemental analysis and computational techniques. Results showed that the inhibition occurs through adsorption of the inhibitor molecules on the metal surface. The effectiveness of protection became more pronounced with decreasing gas evolution as extract concentration increased. Electrochemical results revealed that the extracts’ constituents adsorbed on the AISI 316L surface and enhanced the passivation mechanism which is in agreement with the reduced the anodic and cathodic current densities. Computational simulations were adopted to describe probable reactiveness of SM leaf extract constituents on Fe(110) slab.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Not applicable for this article.

Raphael S. Oguike. 2019. \u201cNatural Products for Material Protection: Passivation Enhancing Potentials of Spondias Mombin as AISI 316L Corrosion Inhibitor in 3.5% NaCl Solution\u201d. Global Journal of Science Frontier Research - B: Chemistry GJSFR-B Volume 19 (GJSFR Volume 19 Issue B2): .

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GJSFR Volume 19 Issue B2
Pg. 33- 44
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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GJSFR-B Classification: FOR Code: 030599
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v1.2

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June 25, 2019

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English

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The corrosion inhibition characteristics of Spondias mombin (SM) on stainless steel AISI 316L in 3.5% NaCl has been studied using gasometric, potentiodynamic polarization, surface and elemental analysis and computational techniques. Results showed that the inhibition occurs through adsorption of the inhibitor molecules on the metal surface. The effectiveness of protection became more pronounced with decreasing gas evolution as extract concentration increased. Electrochemical results revealed that the extracts’ constituents adsorbed on the AISI 316L surface and enhanced the passivation mechanism which is in agreement with the reduced the anodic and cathodic current densities. Computational simulations were adopted to describe probable reactiveness of SM leaf extract constituents on Fe(110) slab.

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Natural Products for Material Protection: Passivation Enhancing Potentials of Spondias Mombin as AISI 316L Corrosion Inhibitor in 3.5% NaCl Solution

Raphael S. Oguike
Raphael S. Oguike Abubakar Tafawa Balewa University
Omolara Oni
Omolara Oni

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