Mechanical property and wear performance dependence on processing condition for cold-sprayed WC-(nanoWC-Co)

- Co phase transformation occurs during cold spray due to high strain rate deformation.
- Higher nano-WC content improves both hardness and toughness of WC-(nanoWC-Co).
- Simultaneous strengthening and toughening significantly improves wear resistance.
- Annealing as-sprayed WC-(nanoWC-Co) enhances wear performance by further toughening.