NDLI: Electrochemical pitting behaviour of type 321 stainless steel in sulfide-containing chloride solutions

Content Provider	Springer Nature Link
Author	Liou, Y.M. Chiu, S.Y. Lee, C.L. Shih, H.C.
Copyright Year	1999
Abstract	The pitting behaviour of type 321 stainless steel in sulfide-containing chloride aqueous environments was studied using cyclic potentiodynamic polarization. A well-established correlation between H$_{2}$S and Na$_{2}$S$_{2}$O$_{3}$ in the study of corrosion was applied, that is, H$_{2}$S was simulated by Na$_{2}$S$_{2}$O$_{3}$. The major factors affecting the pitting corrosion of type 321 stainless steel are the Cl$^{-}$ concentration, solution pH and temperature. The results clearly indicate that both E$_{pit}$ and E $_{pp}$ decrease with increasing Cl$^{-}$ concentration and temperature, while I $_{pass}$ is more sensitive to temperature variation. E $_{pit}$ decreased with decreasing pH in the range 2 < pH < 7.5. The surface morphology and chemistry of the corroded type 321 stainless steel resulting from anodic polarization in 0.01 M S$_{2}$O 3 2- -containing Cl$^{-}$ solution were analysed by XRD, SEM and EPMA. A higher concentration of sulfur was found in the pits, and the dark surface film was mainly composed of FeS and γ-Fe$_{2}$O$_{3}$. The results describe the pitting behaviour of type 321 stainless steel in sulfide-containing Cl$^{-}$ aqueous environments.
Starting Page	1377
Ending Page	1381
Page Count	5
File Format	PDF
ISSN	0021891X
Journal	Journal of Applied Electrochemistry
Volume Number	29
Issue Number	12
e-ISSN	15728838
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Chemical Engineering Electrochemistry

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