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08265 Modeling of Carbonate-Bicarbonate Stress Corrosion Cracking of Pipeline Steels

Picture for 08265 Modeling of Carbonate-Bicarbonate Stress Corrosion Cracking of Pipeline Steels
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This project has been concerned with the physical and numerical modeling of the conditions developed under disbonded coatings on steel, with a view to understanding the processes responsible for the conditions that lead to stress corrosion cracking.

Product Number: 51300-08265-SG
ISBN: 08265 2008 CP
Author: Robert A. Cottis and Maftah H. Alkathafi
Publication Date: 2008
Industry: Science of Corrosion
$0.00
$20.00
$20.00

This project has been concerned with the physical and numerical modeling of the conditions developed under disbonded coatings on steel, with a view to understanding the processes responsible for the conditions that lead to SCC. The physical model (not presented in detail in this paper) has used a polymer film covering a crevice of controlled thickness, with a controlled gas composition (air augmented with additional CO2) on the exterior of the film. pH has been monitored at locations down the crevice using fibre-optic sensors, and potential has been monitored at the same locations using salt-bridge to conventional reference electrodes. A numerical model of the same system has been developed using a commercial finite element package.

Keywords: stress corrosion cracking, carbonate/bicarbonate, steel, numerical model

This project has been concerned with the physical and numerical modeling of the conditions developed under disbonded coatings on steel, with a view to understanding the processes responsible for the conditions that lead to SCC. The physical model (not presented in detail in this paper) has used a polymer film covering a crevice of controlled thickness, with a controlled gas composition (air augmented with additional CO2) on the exterior of the film. pH has been monitored at locations down the crevice using fibre-optic sensors, and potential has been monitored at the same locations using salt-bridge to conventional reference electrodes. A numerical model of the same system has been developed using a commercial finite element package.

Keywords: stress corrosion cracking, carbonate/bicarbonate, steel, numerical model

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