Electrochemical and surface studies of some Porphines as corrosion inhibitor for J55 steel in sweet corrosion environment

Ambrish Singh,Yuanhua Lin,K.R Ansari,M.A Quraishi,Eno E Ebenso,Songsong Chen,Wanying Liu

doi:10.1016/j.apsusc.2015.10.129

Electrochemical and surface studies of some Porphines as corrosion inhibitor for J55 steel in sweet corrosion environment

Ambrish Singh, Yuanhua Lin + Show 5 more

https://doi.org/10.1016/j.apsusc.2015.10.129

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Journal: Applied Surface Science	Publication Date: Oct 20, 2015
Citations: 87

Affiliation: Lovely Professional University, Southwest Petroleum University, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Banaras Hindu University, North-West University

#J55 Steel #Scanning Electrochemical Microscopy + Show 8 more

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Abstract

Corrosion inhibition of J55 steel in 3.5wt.% NaCl solution saturated with CO2 by the three Porphines 5,10,15,20-Tetra(4-pyridyl)-21H,23H-porphine (P1), 5,10,15,20-Tetraphenyl-21H,23H-porphine (P2), 5,10,15,20-Tetrakis(4-hydroxyphenyl)-21H,23H-porphine (P3), electrochemical impedance spectroscopy (EIS), Contact angle measurement, scanning electrochemical microscopy (SECM), and atomic force microscopy (AFM). Adsorption of such Porphines on the J55 steel surface obeyed to the Langmuir adsorption isotherm. Atomic force microscopy (AFM), SECM, and Contact angle results confirm the formation of inhibitor film on J55 steel surface thereby mitigating corrosion.

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