The behaviour of an inhibitor at various temperatures has been investigated using the scheme of the polarization resistance evaluated with the approximate calculation of the value of the First derivative of the function i = i(E) at E=Ec. The experimental measurements were carried out using the SOFTCOR-DC-PS1 program whose main characteristics are illustrated.

The inhibitor effectiveness is defined and the methods allowing its determination are briefly discussed. Also the behaviour of ARMCO iron and of two carbon steels, SA 182 Grade F11 and SA 182 Grade F22, in a 5% HCl solution inhibited with Rodine 213 or Borg P16 at 35 C, 45 C, 60 C, 75 C and 90 C, has been investigated.

The results thus obtained should be considered quite satisfactory even if the electrochemical measurements were not sometimes in good agreement with the true behaviour of the corrosion process.

Subject
Materials, Inhibitor performance, Corrosion rate, Iron, Polarization curves, Corrosion products, Experimental data, Chemical inhibition, Characterization tests, Corrosion inhibitors, Carbon steel, Polarization resistance, Corrosion potential
© 1989 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).
1989
Association for Materials Protection and Performance (AMPP)
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