Cavitation erosion characteristics of super duplex stainless steel (S32760) and austenitic stainless steel (S30400) in 3.5% NaCl solution with controlled temperature and pH value in the range of 10 to 70°C and pH 3 to 11 have been studied by means of a 20kHz ultrasonic vibrator at a peak to peak amplitude of 50 μm. The erosion resistance of other stainless steels including S31803 and S31603 was also investigated for comparison purpose. Plots of cumulative erosion mass loss per unit area versus temperature for S32760 and S30400 indicate that the degree of erosion initially increases as the temperature increases from 10°C to 50°C and passes through a maximum at about 50°C and then decreases with further increase in temperature to 70°C. Results of cumulative erosion versus pH indicate that the degree of erosion of S32760 is more sensitive to pH value than that of S30400 at 23°C.

Subject
Cavitation, Super duplex stainless steel, Steel surfaces, Materials, Erosion resistance, Mass loss, Acidity, Constants, Sodium chloride solution, Erosion, Passivation, Stainless steel, Corrosion potential
Keywords:
Super duplex stainless steel, austenitic stainless steel, cavitation erosion, temperature, pH
© 1996 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).
1996
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.