Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

09427 Electrochemical Methods for Repassivation Potential Measurements

Picture for 09427 Electrochemical Methods for Repassivation Potential Measurements
Available for download

The susceptibility of Alloy 22 (N06022) to crevice corrosion may depend on environmental and metallurgical variables and it was mostly tested to obtain crevice repassivation potentials.

Product Number: 51300-09427-SG
ISBN: 09427 2009 CP
Author: C. Mabel Giordano, Martin A. Rodriguez, Ricardo M. Carranza and Raul B. Rebak
Publication Date: 2009
Industry: Science of Corrosion
$0.00
$20.00
$20.00

The susceptibility of Alloy 22 (N06022) to crevice corrosion may depend on environmental and metallurgical variables and it was mostly tested to obtain crevice repassivation potentials. Regardless of all the combinations or variations of the electrochemical test methods Cyclic Potentiodynamic Polarization (CPP), Tsujikawa – Hisamatsu Electrochemical (THE), Potentiostatic (POT), and Mixed Poentiodynamic - Potentiostatic (PD – POT – PD), whenever crevice corrosion readily occurs, the values of repassivation potential for Alloy 22 seem comparable if all environmental and metallurgical variables remain the same. This finding suggests that the crevice repassivation potential is a property of the alloy in each testing condition and does not depend greatly on the manner it is obtained provided that highly aggressive conditions are used. Under less aggressive conditions, when crevice corrosion is more difficult to initiate, the value of repassivation potential may differ from method to method. In this work three different electrochemical methods (CPP, THE, and PD – POT - PD methods) were used to evaluate the susceptibility of Alloy 22 to crevice corrosion in two different solutions: one highly aggressive (1M NaCl at 90ºC), and one weakly aggressive (1M NaCl + 0.15M NaNO3 at 90 ºC). The effect of applied torque was also investigated in these systems.

N06022, crevice corrosion,   repassivation 

 

The susceptibility of Alloy 22 (N06022) to crevice corrosion may depend on environmental and metallurgical variables and it was mostly tested to obtain crevice repassivation potentials. Regardless of all the combinations or variations of the electrochemical test methods Cyclic Potentiodynamic Polarization (CPP), Tsujikawa – Hisamatsu Electrochemical (THE), Potentiostatic (POT), and Mixed Poentiodynamic - Potentiostatic (PD – POT – PD), whenever crevice corrosion readily occurs, the values of repassivation potential for Alloy 22 seem comparable if all environmental and metallurgical variables remain the same. This finding suggests that the crevice repassivation potential is a property of the alloy in each testing condition and does not depend greatly on the manner it is obtained provided that highly aggressive conditions are used. Under less aggressive conditions, when crevice corrosion is more difficult to initiate, the value of repassivation potential may differ from method to method. In this work three different electrochemical methods (CPP, THE, and PD – POT - PD methods) were used to evaluate the susceptibility of Alloy 22 to crevice corrosion in two different solutions: one highly aggressive (1M NaCl at 90ºC), and one weakly aggressive (1M NaCl + 0.15M NaNO3 at 90 ºC). The effect of applied torque was also investigated in these systems.

N06022, crevice corrosion,   repassivation 

 

Product tags
Also Purchased
Picture for The Role Of Local Chemistry Changes In Repassivation Of Localized Corrosion – A Review
Available for download

51316-7083-The Role Of Local Chemistry Changes In Repassivation Of Localized Corrosion – A Review

Product Number: 51316-7083-SG
ISBN: 7083 2016 CP
Author: Narasi Sridhar
Publication Date: 2016
$20.00

Galvele introduced a new framework for localized corrosion with his seminal paper on acidification and chloride accumulation in pits & the need for a critical product of current density & pit depth to sustain this chemistry. This paper is to review the progress in these areas with a particular focus on repassivation potential.
Picture for 05551 CO2 Corrosion Prediction Model - Basic
Available for download

05551 CO2 Corrosion Prediction Model - Basic Principles

Product Number: 51300-05551-SG
ISBN: 05551 2005 CP
Author: Stein Olsen, Statoil ASA; Anne Marie Halvorsen, Norsk Hydro ASA; Per G. Lunde, Norsk Hydro Americas;
Publication Date: 2005
$20.00

The NORSOK M-506 is an empirical model based on experiments undertaken in a single phase water flow loop. The data is from experiments with low content of iron ions in the water phase, and the model is thus regarded to give a fair representation of the maximum corrosion rate in a CO2 corrosion controlled system.
Picture for 08174 Unusual Corrosion Failures of Stainless Steel in Low Chloride Waters
Available for download

08174 Unusual Corrosion Failures of Stainless Steel in Low Chloride Waters

Product Number: 51300-08174-SG
ISBN: 08174 2008 CP
Author: Troels Mathiesen and Jan Elkjaer Frantsen
Publication Date: 2008
$20.00

Rare corrosion failures of stainless steel are reviewed in the paper. The cases originate from low chloride waters like potable water or fresh water in the temperature range of 15-25°C. Under such conditions full resistance of austenitic stainless steel like AISI 316 is usually expected.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support