Samanta, Aniruddha and Bhattacharya, Manjima and Ratha, Itishree and Chakraborty, Himel and Datta, Susmit and Ghosh, Jiten and Bysakh, Sandip and Sreemany, Monjoy and Rane, Ramkrishna and Joseph, Alphonsa and Mukherjee, Subroto and Kundu, Biswanath and Das, Mitun and Mukhopadhyay, Anoop Kumar (2018) Nano- and micro-tribological behaviours of plasma nitrided Ti6Al4V alloys. Journal of the Mechanical Behavior of Biomedical Materials, 77. pp. 267-294. ISSN 1751-6161

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Abstract

Plasma nitriding of the Ti-6Al-4V alloy (TA) sample was carried out in a plasma reactor with a hot wall vacuum chamber. For ease of comparison these plasma nitrided samples were termed as TAPN. The TA and TAPN samples were characterized by XRD, Optical microscopy, FESEM, TEM, EDX, AFM, nanoindentation, micro scratch, nanotribology, sliding wear resistance evaluation and in vitro cytotoxicity evaluation techniques. The experimental results confirmed that the nanohardness, Young's modulus, micro scratch wear resistance, nano wear resistance, sliding wear resistance of the TAPN samples were much better than those of the TA samples. Further, when the data are normalized with respect to those of the TA alloy, the TAPN sample showed cell viability about 11% higher than that of the TA alloy used in the present work. This happened due to the formation of a surface hardened embedded nitrided metallic alloy layer zone (ENMALZ) having a finer microstructure characterized by presence of hard ceramic Ti2N, TiN etc. phases in the TAPN samples, which could find enhanced application as a bioimplant material.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	25 Sep 2018 10:54
Last Modified:	25 Sep 2018 10:54
URI:	http://cgcri.csircentral.net/id/eprint/4367

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