The authors have developed techniques for maximizing the corrosion information available from short-term coupon exposures. These techniques include the calculation of an estimated long-term corrosion rate and an estimation of the time required for the treated cooling water to passivate coupons.

Coupon weight loss data are plotted versus time for coupons removed at 24-hour intervals during studies of 140 to 180 hours. These data are fit to an equation of the form:
where Y is weight loss (mg) and t is time (hours). The first derivative of this function is taken to determine the instantaneous rate of metal weight loss; both of these curves are plotted. The instantaneous weight loss data are compared with similar data measured by a continuous, recording electrochemical corrosion rate monitor. Data from experimental runs using generic inhibitor programs are presented.
Subject
Inhibitor performance, Corrosion rate, Weight loss coupons, Metal loss, Instrumentation, Metals, Weight loss, Electrochemical data, Corrosion inhibitors, Corrosion data, Passivation, Corrosion coupons, Corrosion monitoring
© 1988 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).
1988
Association for Materials Protection and Performance (AMPP)
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