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Improvement of Pitting Corrosion Resistance of Type 316L Stainless Steel by Potentiostatic Removal of Surface MnS Inclusions
Joint Authors
Sugawara, Yu
Hirabayashi, Koichi
Muto, Izumi
Hara, Nobuyoshi
Source
International Journal of Corrosion
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-05
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
The beneficial effect of the removal of MnS inclusions on the pitting of stainless steels has been demonstrated in two ways.
(1) High-purity Type 316L stainless steel with no inclusions was used as a specimen in the measurement of anodic polarization curves in 0.5 M NaCl and (2) commercial Type 316L stainless steel with MnS and slag-related inclusions was first polarized at different potentials for 30 min in 1 M Na2SO4 of pH 3 and then anodic polarization measurements were taken in 0.5 M NaCl.
Pitting did not occur in the passive or transpassive region of the high-purity steel.
The polarization treatment dissolved MnS and some oxide inclusions (CaO and SiO2) on the surface of the commercial steel.
An increase in pitting potential of the commercial steel was noted after treatment at potentials above 0.2 V.
At the same time, the number of current spikes due to metastable pits decreased significantly.
These results are more likely due to the beneficial effect of removing MnS inclusions from the steel surface rather than the modification effect of the chemical composition of passive films on the surface.
American Psychological Association (APA)
Hara, Nobuyoshi& Hirabayashi, Koichi& Sugawara, Yu& Muto, Izumi. 2012. Improvement of Pitting Corrosion Resistance of Type 316L Stainless Steel by Potentiostatic Removal of Surface MnS Inclusions. International Journal of Corrosion،Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-475128
Modern Language Association (MLA)
Hara, Nobuyoshi…[et al.]. Improvement of Pitting Corrosion Resistance of Type 316L Stainless Steel by Potentiostatic Removal of Surface MnS Inclusions. International Journal of Corrosion No. 2012 (2012), pp.1-6.
https://search.emarefa.net/detail/BIM-475128
American Medical Association (AMA)
Hara, Nobuyoshi& Hirabayashi, Koichi& Sugawara, Yu& Muto, Izumi. Improvement of Pitting Corrosion Resistance of Type 316L Stainless Steel by Potentiostatic Removal of Surface MnS Inclusions. International Journal of Corrosion. 2012. Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-475128
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-475128