Recent studies have shown that there is correlation between the effectiveness of additives containing corrosion inhibitors and surface plasmon resonance (SPR) spectra. In principle, SPR spectroscopy is a valuable tool to examine metal-inhibitor association because it is specifically sensitive to interface structure or electrochemical processes at a metal surface due to contact with water or an electrolyte solution. In this paper we present a preliminary design of a fiber-optic sensor system based on the use of SPR spectra to obtain quantitative information concerning metal-solution interface structure and electrochemical influences of the ambient environment. The sensor system presented employs an inverse model of the dependence of the SPR spectra on the molecular-polarization characteristics of surface deposits, for example inhibitor molecules, and the ambient environment. The potential extension of the inverse model and sensor geometry to the development of algorithms for signal analysis concerning fiber-optic-based corrosion sensors is discussed.

Subject
Sensors, Materials, Inhibitor performance, Substrates, Optimization, Metal surfaces, Additives, Metallic structures, Substrate surfaces, Surface analysis, Interfaces, Fibers, Gold
Keywords:
corrosion inhibition, surface plasmon resonance spectroscopy, fiber-optic sensor, inverse modeling, metal-inhibitor interface structure
© 2005 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).
2005
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.