Friction and wear properties of in situ (TiB2Â +Â TiC)/Ti3SiC2 composites

- Incorporation of TiB2 significantly improves the wear resistance of the composites.
- Friction coefficients of (TiB2 + TiC)/Ti3SiC2 composites show an insensitivity to load.
- Hard TiB2 and TiC particles nail the soft matrix and decentralize the shear stresses.
- A self-lubricating liquid film forms on the wear surface during sliding process.
- Wear mode converts from adhesive wear to abrasive wear with increasing TiB2 content.