Electrochemical Studies of the corrosion inhibition effect of 2-amino-5-ethyl-1,3,4-thiadiazole on low carbon steel in dilute sulphuric acid
No Thumbnail Available
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
The electrochemical behaviour of carbon steel in 0.5 M H2SO4 was studied in the
presence of 2-amino-5-ethyl-1 3 4-thiadiazole (TTD) as inhibitor with the aid of weight loss
method, potentiodynamic polarization and open circuit potential measurement technique. The effect
of inhibitor concentrations, exposure time, corrosion rate and surface coverage on inhibition
efficiency was investigated. Results showed that TTD performed excellently in the acid solution
with the inhibition efficiency increasing with increase in inhibitor concentration up to a peak value
of 80.67% and 90.5% at maximum concentration from weight loss test and potentiodynamic
polarization tests. The compound showed cathodic inhibition tendency in solution with the inhibitor
molecules been effectively adsorbed onto the steel surface, stifling the electrochemical reactions
responsible for corrosion through the exposure hours. Results from statistical analysis through
ANOVA software depicts the overwhelming influence of inhibitor concentration on inhibition
efficiency compared to exposure time.
Keywords
T Technology (General), TJ Mechanical engineering and machinery