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Authors
Affiliations
1 School of Chemistry and Chemical Engineering, Sichuan University of Arts and Science, Dazhou 635000, CN
2 Institute of Functional Materials, Sichuan University of Science and Engineering, Zigong 643000, CN
Source
International Journal of Corrosion, Vol 2016 (2016), Pagination: 1-8
Abstract
N,N-Diethylammonium O,O'-di(p-methoxyphenyl)dithiophosphate (EAPP) as a new corrosion inhibitor was synthesized in the presentwork. Thecorrosion inhibition of EAPP in hydrochloric acid for carbon steelwas evaluated by potentiodynamic polarization measurements, electrochemical impedance spectroscopy, weight lossmeasurements, and scanning electron microscopy. Theresults indicate that the EAPP is mixed type inhibitor, and the adsorption of EAPP on carbon steel surface obeys Langmuir isotherm. In addition, the inhibition efficiency increases with increasing the concentration of inhibitor and decreases with increasing the hydrochloric acid concentration, temperature, and storage time.
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