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NanoMat 2018 Nano Research & Applications
ISSN: 2471-9838 Page 56
April 26-27, 2018
Rome, Italy
17th Edition of International Conference on
Emerging Trends in
Materials Science and
Nanotechnology
Polycarbonate (PC) matrix nanocomposites containing 0-20
Vol% nanosized silicon nitride (Si3N4) particles have been
prepared by solution mixing method followed by hot pressing
at 228°C under a pressure of 45 MPa. To characterize phase
purity, particle size and morphology of Si3N4 nanoparticles, a
combination of x-ray diffractometry and transmission electron
microscopy have been used. The prepared nanocomposites have
been investigated for density, microhardness, microstructure and
wear resistance. Density and microhardness have been found
to increase with increasing volume percent of nanoparticulate.
The experimental values of density of composites fall close
to those of theoretical values predicted from rule of mixtures
thereby suggesting that prepared nanocomposites nearly pore
free. The maximum improvement of microhardness of 189% has
been observed for nanocomposite with 20 Vol% Si3N4 particles
as compared to neat PC. It correlates well a modified rule of
mixtures with strengthening efficiency factor of 0.09. Scanning
electron micrographs indicated good dispersion of nanoparticles
in PC matrix. Friction and wear properties have been evaluated
using pin-on-disc method. It has been found that PC-20% Si3N4
nanocomposite exhibits lowest friction coefficient (about 0.2)
and highest wear resistance as against pure PC for normal load
of 20 N. The improvement of wear resistance has been found to
be as high as 68% with PC containing 20 Vol% Si3N4 as against
neat PC.
Recent Publications
1. Nimu Chand Reger, Vamsi Krishna Balla, Mithun
Das and A K Bhargava (2018) Wear and corrosion
properties of in-situ grown zirconium nitride layers
for implant applications. Surface and Coatings
Technology 335:357-364.
2. P K Sain, R K Goyal, Y V S S Prasad, and A K Bhargava
(2017) Electrical properties of single-walled/multi-
walled carbon-nanotubes filled polycarbonate
nanocomposites. Journal of Electronic Materials 46
(1):458-466.
3. P K Sain, R K Goyal, Y V S S Prasad, and A K
Bhargava (2016) Polycarbonate based three-phase
nanocomposite dielectrics. Materials Research
Express 3:1-11.
4. P K Sain, R K Goyal, Y V S S Prasad, Jyoti, K B Sharma,
and A K Bhargava (2015) Few-layer-graphene/
polycarbonate naocomposites as dielectric and
conducting material. Journal of Applied Polymer
Science 132: 42443.
Biography
A K Bhargava has thirty eight years of teaching and research experience
at Malaviya National Institute of Technology Jaipur (India). Currently, he is
working as a Professor and Head, Department of Metallurgical and Materi-
als Engineering, MNIT Jaipur, India. His areas of specialization include com-
posite materials, rapid solidification of steels, and tribology. He published
several research papers and two books namely, “Polymers, Ceramics and
Composites” and “Mechanical Behaviour and Testing of Materials”. He con-
tributed two book chapters in Elsevier publication.
Investigation of friction and wear properties of silicon nitride
reinforced polycarbonate nanocomposites
A K Bhargava3 , Santosh1, P K Sain2, Aman Kabra3, Nimu Chand Reger 3 and
Dhanraj Solanki3
1Central Warehousing Corporation, Banda, India
2Government Polytechnic College, Bharatpur, India
3Malaviya National Institute of Technology, India
A K Bhargava et al., Nano Res Appl, Volume:4
DOI: 10.21767/2471-9838-C1-008