Samanta, Aniruddha and Chakraborty, Himel and Bhattacharya, Manjima and Ghosh, Jiten and Sreemany, Monjoy and Bysakh, Sandip and Rane, Ramkrishna and Joseph, Alphonsa and Jhala, Ghanshyam and Mukherjee, Subroto and Das, Mitun and Mukhopadhyay, Anoop Kumar (2017) Nanotribological response of a plasma nitrided bio-steel. Journal of the Mechanical Behavior of Biomedical Materials, 65. pp. 584-599. ISSN 1751-6161

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AISI 316L is a well known biocompatible, austenitic stainless steel (SS). It is thus a bio-steel. Considering its importance as a bio-prosthesis material here we report the plasma nitriding of AISI 316L (SS) followed by its microstructural and nanotribological characterization. Plasma nitriding of the SS samples was carried out in a plasma reactor with a hot wall vacuum chamber. For ease of comparison these plasma nitrided samples were termed as SSPN. The experimental results confirmed the formations of an embedded nitrided metal layer zone (ENMLZ) and an interface zone (IZ) between the ENMLZ and the unnitrided bulk metallic layer zone (BMLZ) in the SSPN sample. These ENMLZ and IZ in the SSPN sample were richer in iron nitride (FeN) chromium nitride (CrN) along with the austenite phase. The results from nanoindentation, microscratch, nanoscratch and sliding wear studies confirmed that the static contact deformation resistance, the microwear, nanowear and sliding wear resistance of the SSPN samples were much better than those. of the SS samples. These results were explained in terms of structure property correlations. (C) 2016 Elsevier Ltd. All rights reserved.

Item Type: Article
Subjects: Engineering Materials
Depositing User: Bidhan Chaudhuri
Date Deposited: 01 Feb 2018 11:22
Last Modified: 01 Feb 2018 11:22

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