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Tribology Letters
Published in: Tribology Letters 4/2018

01-12-2018 | Original Paper

Tribological Performance of UHMWPE/GNPs Nanocomposite Coatings for Solid Lubrication in Bearing Applications

Authors: Ismaila Kayode Aliyu, Abdul Samad Mohammed, Amro Al-Qutub

Published in: Tribology Letters | Issue 4/2018

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Abstract

Ultra-high molecular weight polyethylene (UHMWPE)/ graphene nanoplatelets (GNPs) nanocomposite coatings were developed to reduce friction and wear in the absence of liquid lubrication. UHMWPE nanocomposite powders with different loadings (0.25, 1, and 2 wt.%) of GNPs were prepared and electrostatic spraying technique was then used to deposit the nanocomposite powders on aluminum alloy to form a thin coating. Friction and wear tests were conducted on the coatings against a flat-end pin, made of hardened tool steel to determine the best loading of GNPs. That was further tested to investigate the effect of sliding speed and contact pressure on its tribological properties and to establish coating operating limits. Results showed that UHMWPE nanocomposite coating reinforced with 1 wt.% GNPs showed the best tribological performance. It reduced wear rate by about 51% as compared to the pristine UHMWPE coating. The coating sustained a maximum sliding speed of 1 m/s at a contact pressure of 4 MPa equivalent to a pressure and velocity (PV) value of 4 MPa.m/s.
previous article Novel Design of Copper–Graphite Self-Lubricating Composites for Reliability Improvement Based on 3D Network Structures of Copper Matrix
next article Effect of Rheology and Slip on Lubricant Deformation and Disk-to-Head Transfer During Heat-Assisted Magnetic Recording (HAMR)

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Metadata
Title
Tribological Performance of UHMWPE/GNPs Nanocomposite Coatings for Solid Lubrication in Bearing Applications
Authors
Ismaila Kayode Aliyu
Abdul Samad Mohammed
Amro Al-Qutub
Publication date
01-12-2018
Publisher
Springer US
Published in
Tribology Letters / Issue 4/2018
Print ISSN: 1023-8883
Electronic ISSN: 1573-2711
DOI
https://doi.org/10.1007/s11249-018-1096-9

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