Due to its non-invasive nature and today’s improved data acquisition electrochemical noise (ECN) techniques are about to become a reliable monitoring tool in laboratory and industry. The newly developed CoulCount method, based on current noise measurements will surely contribute to this due its versatile applicability. The time-related cumulated noise charges extracted from the noise signals between two, identical’ electrodes yield a direct quantitative easy-to-interpret information on time-related corrosion intensities. The multitude of advantages of the new software-assisted method are outlined and demonstrated in a failure analysis on the cause of crevice corrosion at spigots of automotive cooling water pumps.

Subject
Water, Salts, Electrochemical noise, Corrosion activity, Beads, Liquids, Crevices, Current noise, Filters, Crevice corrosion, Cooling water, Aluminum alloys, Electrodes
Keywords:
Electrochemical Noise, CoulCount method, crevice corrosion, online-monitoring, aluminum alloys, salt effect, cooling waters, diluted glycol
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.