The 100mV cathodic polarization criterion is being used more extensively on piping in the oil and gas industry which has prompted a discussion on the limits of its use. This paper summarizes the technical literature on the validity of this criterion with respect to elevated temperature, sulfate reducing bacteria, mill-scale, type of metal, mixed metal structures, stress corrosion cracking, soil moisture, and AC corrosion.

Subject
Cathodic polarization, Steel structures, Cathodic protection, Moisture, Corrosion rate, Corrosion cells, Metals, Steel, Polarization, Polarized potential, Soil, Corrosion potential, Stress corrosion cracking
Keywords:
100mV, cathodic polarization criterion, cathodic protection, elevated temperature, mill-scale, SRB, SCC, AC corrosion, mixed metal structures, soil moisture
© 2007 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).
2007
Association for Materials Protection and Performance (AMPP)
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