As a hydrate inhibitor, Mono ethylene glycol (MEG) is one common preference to prevent formation of solid gas-hydrates in wet natural gas pipelines. But in aspect of corrosion reaction, how does it affect the corrosion process: corrosion inhibitor or promoter? The goal of this work was to investigate the corrosion inhibition performance of MEG in stimulant solutions containing CO2. The electrochemical techniques, such as potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS) measurements were used to determine the corrosion kinetics of X70 steel and weight loss method to examine the corrosion rates at different MEG concentrations under static conditions. The morphology of the iron scale layer was later analyzed by Scanning Electron Microscopy (SEM).

Subject
Electrochemical impedance spectroscopy, Water, Materials, Corrosion rate, Solubility, Free corrosion potential, Surface morphology, Mixtures, Corrosion scales, Solutions, Film formation, Steel, Brines
Keywords:
mono ethylene glycol, corrosion inhibition performance, corrosion scale
© 2012 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).
2012
Association for Materials Protection and Performance (AMPP)
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