Inconel 600 specimens were irradiated with 1 Mev proton produced from Van de Graaf accelerator. Penetration curves of the irradiated specimens were calculated. The potentiodynamic cyclic polarization method and AC impedence analysis were applied to study the effects of proton irradiation on the pitting corrosion resistance of Inconel 600 in the chloride medium at room temperature. Irradiation may induce a more homogeneous distribution of alloy elements which could reduce corrosion. But radiation induced defects (voids and dislocations etc) may increase corrosion. The effects of radiation on the pitting of Inconel 600 are discussed along with the evolution of the microstructure during irradiation. The test results indicate that 0.05 dpa proton irradiated Inconel 600 specimens shows a better oxide film than those of other irradiated dose. Specimens with higher proton irradiation dose (0.2-2.0 dpa) usually show lower corrosion resistance.

Subject
Pits, Materials, Nickel based alloys, Repassivation potentials, Irradiation, Density, Sodium chloride solution, Pitting, Immersion, Corrosion resistance, Voids, Potentiodynamic polarization, Electrode potential
Keywords:
pitting, proton irradiation, dose, nucleation potential, protective potential, microstructure
© 1993 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).
1993
Association for Materials Protection and Performance (AMPP)
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