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Corrosion behavior of X65 carbon steel in simulated oilfield produced water
Author(s) -
Zhang Y. L.,
Du M.,
Zhang J.,
Du J. Q.
Publication year - 2015
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201307448
Subject(s) - acetic acid , corrosion , materials science , carbon steel , dielectric spectroscopy , partial pressure , scanning electron microscope , polarization (electrochemistry) , cathodic protection , electrochemistry , hydrogen , metallurgy , chemical engineering , composite material , chemistry , oxygen , electrode , organic chemistry , engineering
Corrosion behavior of X65 steel in simulated oilfield water was studied by weight loss, polarization curve, electrochemical impedance spectroscopy, scanning electron microscope, and X‐ray diffraction methods. Effects of temperature, acetic acid concentration, and CO 2 partial pressure on the corrosion behavior were discussed. Results showed that the corrosion rate increased with the increasing of temperature, acetic acid concentration, and CO 2 partial pressure. High temperature favored the formation of FeCO 3 ; the addition of acetic acid could speed hydrogen depolarization, but the more acetic acid could remove FeCO 3 layer, CO 2 mainly influenced the cathodic reaction, appearing limiting diffusive current density. Acetic acid and CO 2 had a synergistic effect on the corrosion process of X65 carbon steel in simulated oilfield produced water.