Since their commercial introduction into this country in the early 1950's, inorganic zinc coatings have been the most accepted type coatings to arrest corrosion in areas where zinc can be used. Zinc filled paints have been in existence since 1840. It was the research and exhaustive studies by Dr. Ulich Evans at Cambridge University in the 1930-1940 era that proved the necessity to use the element of zinc to protect against corrosion of steel in accordance with the electromotive forces principle. Dr. A. C. Elm, in 1948, published his work in "Paint, Oil and Chemical Review", the data relating to the protective value of metal pigment paints. According to his work, he established the need of 85% to 95% zinc dust, by weight, in the dried film to provide long term protection against corrosion of steel. Hence came the term zinc rich because of the high percentage of pigment to vehicle.

Subject
Films, Zinc dust, Zinc rich coatings, Water, Moisture, Silicates, Alkyls, Film formation, Steel, Hydrolysis, Corrosion protection, Zinc, Inorganic zinc rich coatings
© 1975 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).
1975
Association for Materials Protection and Performance (AMPP)
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