The linear polarization method[1,2,3] has gained considerable use to monitor the corrosivity of plant process streams. An insulated probe is commonly inserted into a process stream, and the corrosion rate of one or more of the probe electrodes is measured. Two techniques have been developed -- one employs three electrodes in the probe, and the other employs two electrodes. The 3-electrode method is well established in theory, but the 2-electrode method has not received a satisfying analysis using accepted electro-chemical kinetic theory. Nevertheless, the 2-electrode technique also has been employed extensively and with apparent success in practice.

Subject
Electric current, Potential differences, Corrosion rate, Cathodic current, Deviation, Linear polarization, Constants, Anodic current, Polarization, Over voltage, Electrodes, Corrosion potential, Electrode potential
© 1973 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).
1973
Association for Materials Protection and Performance (AMPP)
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