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ISSN 2311-3219 - An International Triannual Journal
Chemical & Physical Sciences | Research article
Expired Amitriptyline Drug as a New Nontoxic Inhibitor Protecting Mild Steel Corrosion in HCl Solution
Narasimha Raghavendra*
Department of Chemistry, K.L.E. society's P. C. Jabin Science College (Autonomous) Vidyanagar, Hubballi-580031, India
Abstract
The corrosion inhibition behavior of expired amitriptyline drug on the mild steel in 3M HCl solution was investigated through potentiodynamic polarization, alternating current impedance spectroscopy and atomic absorption spectroscopy techniques. Furthermore, the surface morphology of mild steel in 3M HCl solution was screened by scanning electron microscopy technique. The electrochemical results showed that increasing the expired amitriptyline drug concentration enhanced the protection efficiency of the corrosion inhibitor, depicting that the inhibition property is dependent on the expired amitriptyline drug amounts. Potentiodynamic polarization plots clearly hint the mixed corrosion inhibition property on the mild steel in 3M HCl solution. The charge transfer resistance values in the presence of the expired amitriptyline drug were higher compared to the bare system. Further, atomic absorption spectroscopy and scanning electron microscopy results fully supports the corrosion inhibition property of expired amitriptyline drug on the mild steel surface in acidic system.
A R T I C L E I N F O
Received
October 15, 2018
Accepted
February 07, 2019
Published
April 28, 2019
*Corresponding Author
Narasimha Raghavendra
E-mail
rcbhat3@gmail.com
Keywords
AC impedance spectroscopy
Corrosion
Expired amitriptyline drug
Mild steel
Potentiodynamic polarization
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2019 | Volume 7 | Issue 1