The stress corrosion cracking (SCC) susceptibility of α-brass in 0.01 M copper sulfate with additions of 0.1 M of mono-and di-ethanolamine was studied as a function of the applied potential. In monoethanolamine solutions a potential dependent SCC process was found. In diethanolamine, on the other hand, SCC was observed only at the passivity breakdown potential, and it was attributed to the action of the sulfate ions. Transgranular SCC was found for Ag-Cd alloys in the presence of silver nitrate solutions, the higher the silver ion concentration in the solution the higher the crack velocity. In this case the specific action of the silver ion is believed to be due to the high exchange current between the silver metal and the silver ions in solution, which induces a high surface mobility.

Subject
Intergranular stress corrosion cracking, Corrosion rate, Metal surfaces, Wiring, Crack propagation, Transgranular stress corrosion cracking, Ion concentrations, Metals, Copper, Alloys, Corrosion potential, Stress corrosion cracking, Electrode potential
Keywords:
Stress corrosion cracking, monoethanolamine, diethanolamine, brass, silver-cadmium alloys, nitrate, silver ion, sulfate
© 1995 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).
1995
Association for Materials Protection and Performance (AMPP)
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