Friction and wear behaviour of Mo-W doped carbon-based coating during boundary lubricated sliding

- Novel Mo-W-C coating provides extremely low friction (μ ∼ 0.03) in lubricated condition.
- Mo-W-C outperforms existing DLCs in terms of low friction, independent of temperature.
- Tribochemical reactions govern the wear mechanism of Mo-W-C coating.
- The transfer layer contains graphitic carbon and 'in situ' formed WS2 and MoS2.
- WS2 and MoS2 are the key factors facilitating appreciably low friction and wear rate.