The effect of turbulent flow conditions on the kinetics and mechanism of two relevant corrosion processes is studied and analyzed: inhibitors evaluation and electrochemical behavior of cathodic protection galvanic anodes. In all these cases, the rotating cylinder electrode, RCE, becomes a useful and valuable tool to study the mass transfer process involved which typically is the rate determining step of corrosion mechanism. It was found that under turbulent flow conditions, the corrosion rate linearly increased as the RCE’s rotation rate also increased and the overall electrochemical corrosion process was influenced by the oxygen mass transfer process on the cathodic kinetics.

Subject
Electrochemical impedance spectroscopy, Corrosion rate, Cathodic potential, Diffusion, Turbulent flow, Impedance, Hydrodynamics, Mass transfer, Corrosion inhibitors, Oxygen, Risk reduction, Electrodes, Corrosion potential
Keywords:
aluminum alloy, EIS, flow, inhibitor, rotating cylinder electrode, triazole
© 2013 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).
2013
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.