Characterization of sensitized surfaces and weldments of the unstabilized 304 stainless steel

Characterization of sensitized surfaces and weldments of the unstabilized 304 stainless steel Sensitization of stainless steels has been posing serious problems to the industries. Techniques for rapid detection of sensitized surfaces are being probed throughout the world. Characterization over a wide behavioural range is essential for the above. Characterizes sensitized surfaces of AISI 304 stainless steel using impedance and tafelextrapolation techniques. Welded 304 stainless steel interfaces were subjected to dissolution tests, in different media, for assessing the effect of prolonged poststress relieving on the mitigation of surface dissolution. The corrosion rate values were correlated with the period of sensitization and Huey test results. The sensitized stainless steels were also subjected to electrochemical tests in different solutions. From the impedance behaviour of the sensitized surfaces in 3 per cent NaCl electrolyte, it was observed that the rate of fall in the polarization resistance may be used to monitor the extent of sensitization in 304 stainless steel, with better accuracy, than that in utilizing the polarization resistance itself. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

Characterization of sensitized surfaces and weldments of the unstabilized 304 stainless steel

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0003-5599
DOI
10.1108/eb007404
Publisher site
See Article on Publisher Site

Abstract

Sensitization of stainless steels has been posing serious problems to the industries. Techniques for rapid detection of sensitized surfaces are being probed throughout the world. Characterization over a wide behavioural range is essential for the above. Characterizes sensitized surfaces of AISI 304 stainless steel using impedance and tafelextrapolation techniques. Welded 304 stainless steel interfaces were subjected to dissolution tests, in different media, for assessing the effect of prolonged poststress relieving on the mitigation of surface dissolution. The corrosion rate values were correlated with the period of sensitization and Huey test results. The sensitized stainless steels were also subjected to electrochemical tests in different solutions. From the impedance behaviour of the sensitized surfaces in 3 per cent NaCl electrolyte, it was observed that the rate of fall in the polarization resistance may be used to monitor the extent of sensitization in 304 stainless steel, with better accuracy, than that in utilizing the polarization resistance itself.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: Jun 1, 1996

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