Hydrogen entry into pipeline steel under freely corroding conditions in two corroding media
Hydrogen entry into pipeline steel under freely corroding conditions in two corroding media
- New search for: Dey, S.
- New search for: Mandhyan, A.K.
- New search for: Sondhi, S.K.
- New search for: Chattoraj, I.
- New search for: Dey, S.
- New search for: Mandhyan, A.K.
- New search for: Sondhi, S.K.
- New search for: Chattoraj, I.
Hydrogen permeation through API 5L X65 pipeline steel was studied under freely corroding conditions in (a) 5% NaCl + 0.5% acetic acid and (b) 1 N H2SO4 + 10 mg/l sodium arsenite. A steady state condition with regards to permeation flux is not obtained due to the presence of corrosion product, changing sample dimension and a possible change in hydrogen availability on the corroding surface. A unique way of calculating the sub-surface hydrogen concentration (C0) under non-steady state freely corroding conditions has been developed. The C0 has been evaluated as a function of exposure time in (a) and (b) solution. The sub-surface hydrogen concentration (C0) increased initially but then decreased with increasing exposure to the corroding solutions, after demonstrating an early maximum. The changes in C0 have been explained taking into consideration the corrosion products that developed, the possible anodic reactions, the changes in sample thickness and other issues in the dynamic system.
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Hydrogen entry into pipeline steel under freely corroding conditions in two corroding media
Wasserstoffaufnahme von Rohrstahl bei freier Korrosion in zwei Korrosionsmedien
Corrosion Science ; 48 , 9 ; 2676-2688
2006
13 Seiten, 10 Bilder, 1 Tabelle, 12 Quellen
Article (Journal)
English
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