Abstract
Laser clad NiCr/Cr3C2 coating and Ti2SC/CrS self-lubricating anti-wear composite coating using NiCr/Cr3C2-WS2 powders were fabricated on Ti6Al4V substrates. Effects of annealing on microstructure, microhardness and tribological properties of the Ti2SC/CrS composite coatings had been investigated systematically. Results indicated that the annealing process did not have significant effects on the phase constituents and microhardness. Compared with NiCr/Cr3C2 coating, the Ti2SC/CrS coating shows good anti-wear and friction-reducing properties owing to the existence of in situ synthesized self-lubricating phases Ti2SC and CrS. Furthermore, after the appropriate annealing process (at 600 °C for 1 h), the anti-wear property of the Ti2SC/CrS coating could be significantly enhanced and is beneficial to the running-in surface of the counter-body.
| Original language | English |
|---|---|
| Pages (from-to) | 356-363 |
| Number of pages | 8 |
| Journal | Tribology International |
| Volume | 101 |
| DOIs | |
| Publication status | Published - 1 Sept 2016 |
| Externally published | Yes |
Keywords
- Annealing
- Laser cladding
- Microstructure
- Wear