In this paper, the technical difficulties such as unacceptable high solution ohmic drop and non-uniform current and potential distribution associated with the use of electrochemical techniques and conventionally prepared macro-electrode samples to determine metal corrosion rates in low conductivity solutions are discussed. A description of the development of a new probe based on multiple micro-electrodes to overcome these difficulties is given. The advantages of using the new probe to determine metal corrosion rates in soft water with various conductivities are discussed and demonstrated.

Subject
Water, Corrosion rate, Ohmic drop, Metal surfaces, Probes, Solutions, Corrosion probes, Polarization resistance, Tafel slope, Electrodes, Corrosion potential, Conductivity, Electrode potential
© 1993 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).
1993
Association for Materials Protection and Performance (AMPP)
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