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Investigation on the Relationship between the Surface Chemistry and the Corrosion Resistance of Electrochemically Nitrided AISI 304 Stainless Steel
Joint Authors
Antunes, Renato Altobelli
Rocha, Janaína de Lima
Pereira, Rafael dos Santos
de Oliveira, Mara Cristina Lopes
Source
International Journal of Corrosion
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-03
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The relationship between the surface chemistry and the corrosion resistance of electrochemically nitrided AISI 304 stainless steel samples has been investigated.
The nitriding treatment was carried out in HNO3 0.1 M and HNO3 0.1 M + KNO3 0.5 M at room temperature.
Samples were subjected to the nitriding procedure for 30 minutes under a cathodic potential of -0.7 VAg/AgCl.
The chemical composition of the nitrided layers was assessed by X-ray photoelectron spectroscopy (XPS).
Depth profiles of the main elements present in the nitrided layers were also obtained by XPS by etching them with argon ions.
The corrosion behavior of the nitrided samples was evaluated by potentiodynamic polarization.
The results showed that the nitrided layers consisted of a mixture of chromium nitrides, chromium oxides, iron oxides/oxyhydroxides, and nickel oxide.
The best corrosion resistance was obtained by electrochemical nitriding in the HNO3 0.1 M + KNO3 0.5 M solution.
This result could be correlated with the composition and thickness of the nitrided layer.
American Psychological Association (APA)
Rocha, Janaína de Lima& Pereira, Rafael dos Santos& de Oliveira, Mara Cristina Lopes& Antunes, Renato Altobelli. 2019. Investigation on the Relationship between the Surface Chemistry and the Corrosion Resistance of Electrochemically Nitrided AISI 304 Stainless Steel. International Journal of Corrosion،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1158495
Modern Language Association (MLA)
Rocha, Janaína de Lima…[et al.]. Investigation on the Relationship between the Surface Chemistry and the Corrosion Resistance of Electrochemically Nitrided AISI 304 Stainless Steel. International Journal of Corrosion No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1158495
American Medical Association (AMA)
Rocha, Janaína de Lima& Pereira, Rafael dos Santos& de Oliveira, Mara Cristina Lopes& Antunes, Renato Altobelli. Investigation on the Relationship between the Surface Chemistry and the Corrosion Resistance of Electrochemically Nitrided AISI 304 Stainless Steel. International Journal of Corrosion. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1158495
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1158495