Some achievements in corrosion inhibition of metals by organic compounds are considered on the basis of analysing the scientific publications during the last decade. The influence of chemical structure of organic compounds on inhibitor protection of various metals dissolving from the active state or undergoing localized corrosion is given special attention. The great importance of considering both the electronic and solvation effects as well as further development of the complex formation concept for better understanding of the inhibition process is emphasized. Attention is drawn to the fact that corrosion inhibition is frequently the consequence of reactions of nucleophilic substitution of ligands in metal surface complexes. The potentialities of the quantitative approach (using the linear free energy and the HSAB principles) for finding out the relations between the chemical structures of compounds and their effectiveness as corrosion inhibitors are demonstrated. The main features of corrosion inhibition in media of various compositions are outlined.

Subject
Acids, Anions, Chemical compounds, Metal surfaces, Borate, Iron, Solutions, Chemical inhibition, Metals, Corrosion inhibitors, Pitting, Corrosion protection, Chemical reactions
© 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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