Please use this identifier to cite or link to this item: https://www.um.edu.mt/library/oar/handle/123456789/18328
Title: Corrosion behaviour of carbon S-phase created on Ni-free biomedical stainless steel
Authors: Formosa, Dennis
Hunger, Ralph
Spiteri, Andre
Dong, Hanshan
Sinagra, Emmanuel
Buhagiar, Joseph
Keywords: Corrosion and anti-corrosives
Austenitic stainless steel
Implants, Artificial
Issue Date: 2012-04
Publisher: Elsevier
Citation: Formosa, D., Hunger, R., Spiteri, A., Dong, H., Sinagra, E., & Buhagiar, J. (2012). Corrosion behaviour of carbon S-phase created on Ni-free biomedical stainless steel. Surface and Coatings Technology, 206(16), 3479-3487.
Abstract: Following the success of forming a carbon S-phase (expanded austenite) surface layer on medical grade Ni-free austenitic stainless steel by DC plasma carburising, the established commercial carburising process Kolsterising® was performed on both Ni-containing (AISI 304) and Ni-free austenitic stainless steels. While the Ni-containing stainless steel responded very well to Kolsterising®, the Ni-free alloy did not. The carbon absorption and the hardness of the Kolsterised® Ni-free alloy are inferior to Kolsterised® AISI 304 Ni-containing stainless steel, however, the hardness of the untreated Ni-free alloy was doubled by Kolsterising®. The response of both Kolsterised® Ni-free and Ni-containing alloys to pitting, crevice corrosion and intergranular corrosion resistance was similar. From this work it can be concluded that the Kolsterised® austenitic stainless steels do not suffer from intergranular corrosion but are susceptible to intragranular pitting when tested in boiling sulphuric acid and copper sulphate solution. It was also observed that Kolsterising® improves significantly the pitting and crevice corrosion resistance of the alloys used in this study.
URI: https://www.um.edu.mt/library/oar//handle/123456789/18328
Appears in Collections:Scholarly Works - FacEngMME
Scholarly Works - FacSciChe

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