Inhibition of Acid Corrosion of Mild Steel Using <i>Delonix regia </i>Leaves Extract-Reference-Cited by-同舟云学术

Inhibition of Acid Corrosion of Mild Steel Using Delonix regia Leaves Extract

Published:2016-08 Issue: Volume:69 Page:74-86
ISSN:2299-3843
Container-title:International Letters of Chemistry, Physics and Astronomy
language:
Short-container-title:ILCPA

Author:

Chidiebere Maduabuchi Arinzechukwu¹,Nnanna Lebe²,Adindu Chinonso Blessing³,Oguzie Kanayo¹,Beluonwu Okolue¹,Benedict Onyeachu⁴,Oguzie Emeka E.¹

Affiliation:

1. Federal University of Technology

2. Michael Okpara University of Agriculture

3. Imo State University

4. Edo University Iyamho

Abstract

The inhibition efficacy of aqueous extracts of the leaves ofDelonixregia(DR) in 1 M HCl and 0.5 M H2SO4have been investigated using weight loss, electrochemical and surface probe techniques. DR extract inhibited mild steel corrosion in both acidic environments via adsorption of the extract organic matter on the metal/solution interface. Potentiodynamic polarization results indicate that DR is a mixed type inhibitor in both acidic environments, whereas the impedance results revealed adsorption of the DR species on a corroding steel surface. Increase in inhibition efficiency was concentration dependent. The adsorption followed Langmuir adsorption isotherm. Scanning electron microscopy (SEM) results revealed the formation of a protective layer adsorbed on a mild steel surface in the acid solutions.

Publisher

SciPress Ltd

Subject

Psychiatry and Mental health,Neuropsychology and Physiological Psychology

Link

https://www.scipress.com/ILCPA.69.74.pdf

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