3th WCSET-2014 at Nepal
Applied Sciences Session:
Title:
Electrochemical and surface analysis studies on
corrosion inhibition of carbon steel by Octanesulphonic
acid- Ni2+ system
Authors:
M. Alagumani, K. Sowmiya, C. Mary Anbarasi
Abstract:
The word 'corrosion' is as old as the earth itself, but
it is known by different names.The subject of corrosion
is inter–disciplinary and it involves all the basic
sciences, such as physics, chemistry, biology and all
the disciplines of engineering, such as civil,
mechanical, electrical and metallurgical engineering.
Corrosion is commonly known as rust, an undesirable
phenomenon, which destroys the lustre and beauty of
objects and shortens their life. The goal of studying
the processes of corrosion is to find methods of
minimizing or preventing it. One approach is the use of
corrosion inhibitors. This research aims to study the
corrosion inhibition behavior of octanesulphonic acid
(OSA) in combination with nickel ion (Ni2+) on the
corrosion of carbon steel in dam water using weight-loss
method. Results of weight loss method indicated
inhibition efficiency (IE) increased with increasing
inhibitor concentration. Polarization study reveals that
OSANi2+system controls the anodic reaction
predominantly. AC impedance spectra reveal that a
protective film is formed on the metal surface. The
nature of the metal surface has been analysed by Fourier
transform infrared spectroscopy (FTIR), Scanning
electron microscopy (SEM) and Energy dispersive x-ray
detector (EDAX) measurements.
Keywords: Carbon steel;
Corrosion; Electrochemical techniques; FTIR; SEM; EDAX
Pages:
566-571