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08581 Simple Algorithms for Oxygen Concentration Distribution in an Occluded Region

Picture for 08581 Simple Algorithms for Oxygen Concentration Distribution in an Occluded Region
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Product Number: 51300-08581-SG
ISBN: 08581 2008 CP
Author: Fengmei Song
Publication Date: 2008
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Crevice corrosion, pitting or stress corrosion cracking (SCC) of steel, stainless steels, nickel base alloys, or other metallic materials such as titanium can occur in aerated solution due to a differential oxygen (O2) concentration cell (OCC). An O2 concentration gradient exists in solution between the bulk and the occluded region and within the occluded region itself. Since O2 concentration in the occluded region varies significantly in a non-linear manner in the direction perpendicular to the metal wall(s), it is a challenge to model the corrosion in one-dimension (1D) by considering O2 reduction at the metal wall(s). There is a need for a method that can quantitatively describe this O2 concentration in 1D. This work serves to derive simple algorithms to fulfill the above purpose. Discussion of the validity boundaries of the simple algorithms is provided.
Crevice corrosion, pitting or stress corrosion cracking (SCC) of steel, stainless steels, nickel base alloys, or other metallic materials such as titanium can occur in aerated solution due to a differential oxygen (O2) concentration cell (OCC). An O2 concentration gradient exists in solution between the bulk and the occluded region and within the occluded region itself. Since O2 concentration in the occluded region varies significantly in a non-linear manner in the direction perpendicular to the metal wall(s), it is a challenge to model the corrosion in one-dimension (1D) by considering O2 reduction at the metal wall(s). There is a need for a method that can quantitatively describe this O2 concentration in 1D. This work serves to derive simple algorithms to fulfill the above purpose. Discussion of the validity boundaries of the simple algorithms is provided.
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