Neuroprostheses significantly enhance the independence of people with disabilities by restoring movement and function. A Networked Neuroprosthetic System (NNPS) that electrically stimulates nerve and muscle to provide functional enhancements is being developed. Due to good mechanical properties, corrosion resistance and high electrical conductivity, MP35N alloy wire with a silver core is used for implantable cables, lead wires and interconnects of the networked system. This study investigates the corrosion behavior of silver-cored conducting wires and cables in saline solution utilizing electrochemical methods, scanning electron microscopy (SEM) and energy disperse spectroscopy (EDS). An overall objective for subsequent work is to determine the likelihood and extent of silver release in the body should the silver core be exposed.

Subject
Scanning electron microscopy, Materials, Corrosion currents, Metal surfaces, Tubes, Dissolution, Wiring, Free corrosion potential, Corrosion products, Cables, Corrosion behavior, Interfaces, Film formation
Keywords:
Drawn filled tube, MP35N, silver, silver chloride, corrosion, implant, electrochemical
© 2007 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).
2007
Association for Materials Protection and Performance (AMPP)
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