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Corrosion Inhibiting Effect of 1, 1-BISS-2-Naphthol Containing Two Hydroxyl Groups for Al in the Harsh Hydrochloric Acid Environment

Narasimha Raghavendra*

Assistant Professor, Department of Chemistry, K.L.E. Society's P. C. Jabin Science College (Autonomous), Hubballi, Karnataka, India.

Periodicity:November - January'2019
DOI : https://doi.org/10.26634/jfet.14.2.15399

Abstract

The main objective of this research was to examine the corrosive inhibition property of 1,1-biss-2-Naphthol on the aluminum surface in 3 M HCl environment by weight loss, gasometric, Tafel plot, and impedance spectroscopy techniques. Weight loss results show that addition of1,1-biss-2-Naphthol to the examined solution significantly increases the protection efficiency (decreases dissolution rate). Gasometric studies show that addition of 1, 1-biss-2-Naphthol to the aggressive acid solution effects on the rate of evolution of hydrogen gas. The Tafel plot results show that the synthesized compound 1, 1-biss-2-Naphthol behave as mixed type and hinders cathodic aluminum and anodic aluminum reactions. Impedance studies show that enhancement in the depressed semi circle is due to the positive effect of synthesized compound 1, 1-biss-2-Naphthol.

Keywords

1, 1-Biss-2-Naphthol, Aluminum, Tafel Plot, Impedance Spectroscopy, Gasometric

How to Cite this Article?

Raghavendra, N. (2019). Corrosion Inhibiting Effect of 1, 1-Biss-2-Naphthol Containing Two Hydroxyl Groups for Al in the Harsh Hydrochloric Acid Environment. i-manager’s Journal on Future Engineering and Technology , 14 (2), 37-41. https://doi.org/10.26634/jfet.14.2.15399

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