The effect of heat treatment and tin content on corrosion of Zirconium 702 (R60702) in sulfuric acid was studied. The effect of second phase particles on corrosion resistance of zirconium in sulfuric acid is explained. The benefit of heat treatment is examined. Heat treatments included treatment at 625°C for 1 hour, 2 hours, and 4 hours; 700°C for 1 hour and 2 hours; 770°C for 1 hour; and 788°C for 0.5 hours. Tin variables were 2400-ppm tin and 1400-ppm tin. An updated 5-mpy (0.127 mm/y) isocorrosion curve for Zirconium 702 in sulfuric acid is presented.

Subject
Weld attack, Materials, Acid concentration, Tin, Sulfuric acid, Zirconium, Weldments, Iron, Heat, Zirconium alloys, Corrosion resistance, Heat treatment, Samples
Keywords:
Zircadyne® 702, Zircadyne® 704, Zr 702, Zr 704, zirconium, tin, sulfuric acid, heat-treatment, corrosion, R60702
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
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