Stable high-temperature superlubricity enabled by thermomechanical-induced interfacial graphitization and SiO x -mediated structural locking

Key Points

• The aim is to achieve stable superlubricity in diamond-like carbon films at high temperatures despite challenges of hydrogen loss and oxidation.
• Investigated thermomechanical conditions leading to graphitization of DLC films.
• Examined the role of SiO x in enhancing structural stability under heat.
• Conducted experiments in ambient air to assess lubrication performance.
• Achieved stable superlubricity at elevated temperatures with DLC films.
• Interfacial graphitization significantly reduced friction levels.
• SiO x facilitated improved structural integrity during thermomechanical stress.