Research Article
Corrosion Protection of Stainless Steel by Organic Inhibitors in Phosphate Industries in 15% H2SO4
Singh RK* and Kumar R
Department of Chemistry, Jagdam College, J P University, Chapra, India
- *Corresponding Author:
- Singh RK
Department of Chemistry
Jagdam College
J P University, Chapra, India
Tel: 06152-232407
E-mail: rks_jpujc@yahoo.co.in
Received Date: September 09, 2014; Accepted Date: September 29, 2014; Published Date: October 10, 2014
Citation: Singh RK, Kumar R (2014) Corrosion Protection of Stainless Steel by Organic Inhibitors in Phosphate Industries in 15% H2SO4. J Powder Metall Min 3:124. doi: 10.4172/2168-9806.1000124
Copyright: © 2014 Singh RK, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Phosphate industries use sulphuric acid during the manufacturing of fertilizers. This acid interacts with stainless steel to develop corrosion cell and it corrodes metal. Organic inhibitors 2-(aminomethyl) phenol and 2-(aminomethyl) benzenethiol were taken for corrosion control in 15% H2SO4 medium. Inhibitors anticorrosive effect studied at different temperatures and 10 mM concentration. The corrosion rate of metal absence and presence of inhibitors were determined gravimetric methods. The corrosion current density and inhibitors polarization effect was studied by potentiostat. Inhibitors’ corrosion protection activities like physisorption-chemisorption adsorption, thermal stability and surface films formation analysis can be done by activation energy, heat of adsorption, free energy, enthalpy and entropy. The experimental results of inhibitors surface coverage area and inhibition efficiency were exhibited strong bonding between inhibitors and base metal.
