Experimental study of inhibitor containing sulfur for mild steel in hydrochloric acid
Abstract
Purpose
The purpose of this paper is to use Dextrofosfomysin levophenethylamine salt to prepare HEHSPN-(Na)2 (HSPN), a new corrosion inhibitor containing sulfur.
Design/methodology/approach
The inhibition efficiency for Q235 steel in hydrochloric acid has been evaluated by weight-loss test, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. Surface studies were performed by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM).
Findings
The results show that inhibition efficiency of HSPN increases with an increase in concentration. Adsorption conforms to Flory–Huggins uniform temperature equation, which is multi-molecular layer adsorption and belongs to physical adsorption.
Originality/value
This paper is intended to be added to the family of papers that deal with green corrosion inhibitors which are highly efficient and can be used in the area of corrosion prevention and control.
Keywords
Acknowledgements
The work was supported by Open Research Fund of material corrosion and protection key laboratory of Sichuan province (Number 2010CL09), Open Research Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Number PLN1115) and China National Natural Science foundation (Number 51074135, Number 51401150).
Citation
Ding, Y., Luo, Z. and Liu, D. (2016), "Experimental study of inhibitor containing sulfur for mild steel in hydrochloric acid", Anti-Corrosion Methods and Materials, Vol. 63 No. 4, pp. 275-280. https://doi.org/10.1108/ACMM-08-2014-1419
Publisher
:Emerald Group Publishing Limited
Copyright © 2016, Emerald Group Publishing Limited