A study of the mechanism of corrosion inhibition of mild steel by imidazolines and their precursors in a CO2 containing environment is carried out using Rotating Cylinder Electrode (RCE) and Linear Polarization Resistance (LPR) technique. Corrosion rate-time/concentration profiles (LPR) and minimum effective concentrations (MEC) obtained for a series of imidazolines and amides are discussed in terms of the respective contributions of their constituent parts (imidazoline ring, amide/amine group, hydrocarbon chain) to the overall corrosion inhibition. The formation of the inhibitor film is described in terms of bilayer/multilayer film model.

Subject
Corrosion rate, Inhibitor films, Imidazolines, Surfactants, Constants, Amines, Film formation, Inhibitor treatment, Amide, Corrosion inhibitors, Brines, Hydrolysis, Hydrocarbons
Keywords:
Rotating Cylinder Electrode, imidazoline, amide, amine, corrosion inhibitor, oilfield, CO2, bilayer
© 1998 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1998
Association for Materials Protection and Performance (AMPP)
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