In 1972, Goodyear discovered that zirconium was an ideal material to construct heating coils for sulfuric acid pickling tanks. Recently, localized corrosion and high uniform corrosion were reported with certain zirconium coils. The problems could be attributed to the contamination of chloride and/or fluoride ions. Results of electrochemical and immersion tests are used to discuss the effects of acid concentration and acid impurities, such as iron, chloride and fluoride ions, on zirconium's corrosion properties in H2SO4. Possible sources for acid impurities are identified. Recommendations are made for steel pickling when zirconium equipment is used.

Subject
Acids, Coils, Water, Fluorides, Pickling, Acid concentration, Zirconium, Iron, Ion concentrations, Steel, Equipment, Chlorides, Pickling solutions
© 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)
You do not currently have access to this content.