Volume no :19, Issue no: 1, February (2019)

CORROSION INHIBITION OF 1,4-DIMETHYL PHENYL-N,N-DIMETHYLANILINIUM DIBROMIDE SALT ON MILD STEEL IN HCl SOLUTION

Author's: Ayssar Nahlé, Nada Abdel-Samad Alhammadi, Ideisan Ibrahim Abu-Abdoun and Ibrahim Abdel-Rahman
Pages: [1] - [27]
Received Date: November 15, 2018
Submitted by:
DOI: http://dx.doi.org/10.18642/jmseat_7100122019

Abstract

Electrochemically and weight loss measurements were carried out to study the effect of laboratory synthesized 1,4-dimethyl phenyl-N,N-dimethylanilinium dibromide salt (DMPMA) on the corrosion inhibition of mild steel in 1.0M HCl solution containing various concentrations at temperatures ranging from 303K to 343K.

1,4-dimethyl phenyl-N,N-dimethylanilinium dibromide salt was found to be very efficient inhibitor for mild steel in 1.0M HCl solution, reaching about 93% at the concentration of at 303K. The percentage of inhibition in the presence of this inhibitor decreased with temperature which indicating a physical adsorption was the predominant inhibition mechanism. This inhibitor will have application in industries, where hydrochloric acid solutions at elevated temperatures are used to remove scale and salts from steel surfaces, such as acid cleaning of tankage and pipeline, and may render dismantling unnecessary.

Keywords

corrosion, inhibitor, 1,4-dimethyl phenyl-N,N-dimethylanilinium dibromide, Temkin adsorption isotherm.