Carboxylic acids are surface active agents which adsorb at the water/air interface via their functional groups with hydrocarbon tails extended outward to form a hydrophobic monolayer. When used as corrosion inhibitors, adsorption at the metal/solution interface is by donation of electrons from the oxygen-containing -COOH group to the metal surface. Zisman and coworkers(1-4) have shown that surfaces terminating in fluorocarbon groups are less energetic and are less wettable than are surfaces terminating in hydrocarbon groups. Thus, the idea of using fluorinated molecules as corrosion inhibitors is intriguing because of the possibility of in-situ formation of a low-energy "Teflon-like" surface. Such compounds should be effective corrosion inhibitors if a complete chemisorbed hydrophobic monolayer can be formed by adsorption from the corrosive medium.

Subject
Acids, Electrochemical cells, Acid concentration, Monolayers, Metal surfaces, Wettability, Adsorption, Iron, Methylene, Substrate surfaces, Corrosion inhibitors, Electrodes, Corrosion potential
© 1974 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).
1974
Association for Materials Protection and Performance (AMPP)
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