The effect of the aggressive anions, chloride and sulphide, and their mixtures on the localized corrosion resistance of AISI (1) 410 and 304 stainless steel (SS) with different microstructural characteristics has been studied. A synergistic effect of these anions on pitting attack was found. Tempered states of 410 SS show less localized corrosion resistance than the other states, whereas 304 SS sensitized metal probes were the most affected by localized corrosion.

A comparison between the effect of biogenic and inorganic sulphides and the study of bacterial adhesion on SS surfaces were made. The adhesion of Desulfovibrio vulgaris on the metal probes facilitated localized attack in chloride media.

Subject
Anions, Scanning electron microscopy, Metal surfaces, Magnification, Corrosion attacks, Metals, Sensitization, Pitting, Sulfides, Chlorides, Potentiodynamic polarization, Electrolytes, Electrode potential
Keywords:
Microstructure, stainless steel, sulphate-reducing bacteria, corrosion behavior, sulfide, degree of sensitization, bacterial adhesion, biofilms
© 1991 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).
1991
Association for Materials Protection and Performance (AMPP)
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