TY - JOUR
T1 - Nano- and micro-tribological behaviours of plasma nitrided Ti6Al4V alloys
AU - Samanta, Aniruddha
AU - Bhattacharya, Manjima
AU - Ratha, Itishree
AU - Chakraborty, Himel
AU - Datta, Susmit
AU - Ghosh, Jiten
AU - Bysakh, Sandip
AU - Sreemany, Monjoy
AU - Rane, Ramkrishna
AU - Joseph, Alphonsa
AU - Mukherjee, Subroto
AU - Kundu, Biswanath
AU - Das, Mitun
AU - Mukhopadhyay, Anoop K.
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2018/1
Y1 - 2018/1
N2 - 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, nanowear 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.
AB - 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, nanowear 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.
KW - Hardness
KW - Nanoindentation
KW - Plasma nitriding
KW - Scratch, Wear
KW - Ti6Al4V
UR - http://www.scopus.com/inward/record.url?scp=85030719598&partnerID=8YFLogxK
U2 - 10.1016/j.jmbbm.2017.09.013
DO - 10.1016/j.jmbbm.2017.09.013
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C2 - 28957702
AN - SCOPUS:85030719598
SN - 1751-6161
VL - 77
SP - 267
EP - 294
JO - Journal of the Mechanical Behavior of Biomedical Materials
JF - Journal of the Mechanical Behavior of Biomedical Materials
ER -