A modification of traditional electrical resistance technology is demonstrated which leads to high resolution measurements that can be used to quantify instant corrosion rate in addition to accumulated degree of corrosion. Electrical circuitry, mathematical algorithms, and methods for temperature compensation are demonstrated. The applicability of the technique has been demonstrated in fields where electrochemical techniques are excluded. These include measurements under cathodic polarization and cathodic polarization combined with superimposed alternating currents (AC) as well as measurements of the degradation of electro-galvanized zinc surfaces exposed in salt spray test.

Subject
Cathodic polarization, Materials, Corrosion rate, Probes, Experimental data, Corrosion behavior, Salt spray corrosion testing, Steel, Corrosion data, Corrosion resistance, Zinc, Electrical resistance probes, Elements
Keywords:
High-resolution ER-technology, corrosion rate monitoring, polarization curve, AC induced pipeline corrosion, atmospheric corrosion, electro-deposited zinc
© 2003 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).
2003
Association for Materials Protection and Performance (AMPP)
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