The addition of 0.1 to 0.25 weight percent nitrogen to austenitic alloys has been shown to enhance resistance to localized corrosion in oxidizing chloride and reducing acid solutions. Further tests of Fe-Cr-Ni-Mo alloys assess the effects of nitrogen additions on: mechanical properties, chloride and caustic stress corrosion cracking resistance, passivation characteristics and general corrosion rates in various acid, alkali and salt solutions pertinent to the Chemical Process Industries. The precipitation of chromium- rich secondary phases was retarded by solid solution additions of 0.1 to 0.25 weight pct nitrogen. The corrosion resistance of Fe-Cr-Ni-Mo-N alloys in the welded condition was improved by using shield-gas mixtures of argon and 2.5 to 5.0 volume percent nitrogen.

Subject
Acids, Corrosion resistant alloys, Stainless alloys, Nickel based alloys, Molybdenum alloys, Chemical resistance, Commercial alloys, Crevices, Sodium chloride solution, Nitrogen content, Nitrogen, Corrosion resistance, Alloys
© 1986 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).
1986
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.