The efficiency of an inhibitor was evaluated on precorroded samples at different temperatures, pH values and flow velocities. A procedure based on the use of electrochemical impedance spectroscopy (EIS) and rotating cylinder electrodes was implemented in order to study the effect of these variables. An experimental design was followed and the results were analyzed using statistical methods. The statistical analysis showed that flow velocity, followed by pH were the factors that most significantly influenced the corrosion rates of the steel at the conditions evaluated, after adding the inhibitor.

Subject
Electrochemical impedance spectroscopy, Inhibitor performance, Corrosion rate, Flow velocity, Impedance, Average corrosion rates, Corrosion products, Experimental data, Inhibition efficiency, Weight loss, Corrosion inhibitors, Steel, Electrodes
Keywords:
CO2 corrosion, inhibition, temperature effect, flow velocity, carbon dioxide, carbon steel, pre-corroded surface, impedance spectroscopy, analysis of variance, regression
© 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)
You do not currently have access to this content.