doi:10.1016/j.triboint.2018.05.011

Paper Title

Tribological studies of dual-coating (intermediate hard with top epoxy-graphene-base oil composite layers) on tool steel in dry and lubricated conditions

Authors

Avinash Kumar Agarwal

Vikram Kumar

Sujeet K. Sinha

Keywords

Tribological Performance
Dual-Coatings
Epoxy Composites
Graphene Reinforced Epoxy
Base Oil Epoxy
Hard Intermediate Layers
Diamond-Like Carbon
Tungsten Carbide
Titanium Aluminium Nitride
D2 Steel
Friction and Wear Tests
Normal Load
Linear Sliding Speed
Steel Ball Counterface
Coefficient of Friction
Wear-Life
DLC Coating
Wear Resistance
Composite Coatings
Surface Engineering
Lubrication Performance

Article Type

Research Article

Journal

Tribology International

Research Impact Tools

DOI

10.1016/j.triboint.2018.05.011

Issue

Volume : 127 | Page No : 10-23

Published On

November, 2018

Downloads

FULL PDF

CITATION

COPY LINK

Abstract

The main objective of this investigation is to evaluate the tribological performance of dual-coatings of epoxy composites (epoxy with 10 wt% of graphene and 10 wt% of base oil) on different hard intermediate layers (diamond-like-carbon, tungsten carbide and titanium aluminium nitride) deposited on D2 steel. Friction and wear tests were conducted at 10 N and 15 N normal loads, and 0.63 m/s linear sliding speed and the counterface was a 4 mm steel ball. Among all dual-coatings, the combination of DLC intermediate layer and epoxy composite top layer furnished the least coefficient of friction of 0.09 and wear-life exceeded 2 × 105 cycles with no or negligible wear. In comparison, only hard or only soft coating had very limited wear-life.