Effect of nanocrystalline structure on the corrosion of a Fe20Cr alloy

Gupta, Rajeev K., Singh, Raman R.K., Koch, Carl C. and Murty, B.S. 2013, Effect of nanocrystalline structure on the corrosion of a Fe20Cr alloy, International journal of electrochemical science, vol. 8, no. 5, pp. 6791-6806.

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Title Effect of nanocrystalline structure on the corrosion of a Fe20Cr alloy
Author(s) Gupta, Rajeev K.
Singh, Raman R.K.
Koch, Carl C.
Murty, B.S.
Journal name International journal of electrochemical science
Volume number 8
Issue number 5
Start page 6791
End page 6806
Total pages 16
Publisher Electrochemical Science Group
Place of publication Bor, Serbia
Publication date 2013
ISSN 1452-3981
Keyword(s) Stainless steel
passive films
Summary The corrosion behaviour of nanocrystalline and microcrystalline Fe20Cr alloys, prepared by high energy ball milling followed by compaction and sintering, was studied in 0.05M H2SO4 and 0.05M H2SO4 + 0.5M NaCl by potentiodynamic polarization. The nanocrystalline alloy exhibited improved passivating ability and pitting resistance as described by passivation potential, critical current density, passive current density and breakdown potential. XPS and SIMS analysis revealed greater Cr content in the passive film formed on the nanocrystalline form of the alloy. The enhanced passivating ability of the nanocrystalline alloy was attributed to the formation of the passive film with higher Cr content.
Language eng
Field of Research 091207 Metals and Alloy Materials
091299 Materials Engineering not elsewhere classified
100708 Nanomaterials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30053612

Document type: Journal Article
Collections: Institute for Frontier Materials
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