Menu
Search
Filters
Close
Menu

08272 Modeling the Combined Effect of Chlorides and Oxyanions on Localized Corrosion

Picture for 08272 Modeling the Combined Effect of Chlorides and Oxyanions on Localized Corrosion
Available for download
Product Number: 51300-08272-SG
ISBN: 08272 2008 CP
Author: Andre Anderko, Narasi Sridhar, Marta Jakab, and Garth Tormoen
Publication Date: 2008
$0.00
$20.00
$20.00
Repassivation potentials of stainless steels and nickel-base alloys have been investigated in aqueous environments containing chloride ions as aggressive species and selected oxyanions as inhibitive species. An extensive database of repassivation potentials has been established for six alloys (UNS N06600, N06690, S31254, S32205, UNS S41425, and S31603) in contact with solutions that combine chlorides with hydroxides, molybdates, vanadates, sulfates, and nitrates at various concentrations and temperatures. This database has been used to validate and calibrate a previously developed mechanistic model for predicting the repassivation potential in complex chemical environments. The model accounts for the effect of solution chemistry and temperature on the repassivation of localized corrosion by considering competitive dissolution, adsorption, and oxide formation processes at the metal – occluded site solution interface. The model accurately reproduces the inhibiting effect of oxyanions and correctly identifies the relative concentrations of chlorides and oxyanions at which a transition from localized corrosion to inhibition is observed. Using parameters determined using a limited experimental data set, the model can predict localized corrosion in complex, multicomponent environments.
Repassivation potentials of stainless steels and nickel-base alloys have been investigated in aqueous environments containing chloride ions as aggressive species and selected oxyanions as inhibitive species. An extensive database of repassivation potentials has been established for six alloys (UNS N06600, N06690, S31254, S32205, UNS S41425, and S31603) in contact with solutions that combine chlorides with hydroxides, molybdates, vanadates, sulfates, and nitrates at various concentrations and temperatures. This database has been used to validate and calibrate a previously developed mechanistic model for predicting the repassivation potential in complex chemical environments. The model accounts for the effect of solution chemistry and temperature on the repassivation of localized corrosion by considering competitive dissolution, adsorption, and oxide formation processes at the metal – occluded site solution interface. The model accurately reproduces the inhibiting effect of oxyanions and correctly identifies the relative concentrations of chlorides and oxyanions at which a transition from localized corrosion to inhibition is observed. Using parameters determined using a limited experimental data set, the model can predict localized corrosion in complex, multicomponent environments.
Product tags
Also Purchased
Picture for 08271 Effects of Oxygen, Temperature and Salinity on Carbon Steel Corrosion in Aqueous Solutions; Mo
Available for download

08271 Effects of Oxygen, Temperature and Salinity on Carbon Steel Corrosion in Aqueous Solutions; Model Predictions versus Laboratory Results

Product Number: 51300-08271-SG
ISBN: 08271 2008 CP
Author: Steven Grise and Brian Saldanha
Publication Date: 2008
$20.00

Corrosion of carbon steel materials in brine solutions.  Model results will be compared with literature data and lab experiments. Conditions will be limited to near neutral pH (5-9), temperature  from 22oC to 55oC, and O2 atmospheres up to 101.325 kPa.
Picture for 08286 Real Time Corrosion Monitoring to Assess the Corrosivity of Oil Water Mixtures and the Kinetic
Available for download

08286 Real Time Corrosion Monitoring to Assess the Corrosivity of Oil Water Mixtures and the Kinetics of the Response of Corrosion Inhibitors

Product Number: 51300-08286-SG
ISBN: 08286 2008 CP
Author: W. Villamizar, C. Magana, H. Chow, J. Gonzalez, M. Casales, and L. Martínez
Publication Date: 2008
$20.00
Picture for 08279 Update for Expected Service Life and Cost Considerations for Maintenance and New Construction
Available for download

08279 Update for Expected Service Life and Cost Considerations for Maintenance and New Construction Protective Coating Work

Product Number: 51300-08279-SG
ISBN: 08279 2008 CP
Author: Jayson Helsel, Joseph Wissmar, and Robert Lanterman
Publication Date: 2008
$20.00
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