Abstract
WC-12Co coatings with different content of nano-sized rare earth were prepared by high velocity oxy-fuel thermal spray (HVOF) on 45 steel substrate. In order to study the effect of nano-sized rare earth on WC-12Co coating, microhardness, bonding strength and wear resistance of the coatings were tested, and XRD analysis was carried out. The results show that appropriate nano-sized rare earth can greatly improve the coating hardness and bonding strength, and it can also restrain decarburization of WC particles, make the microstructure fine. The coating with 1.5wt% nano-sized rare earth presents the best wear resistance.
| Original language | English |
|---|---|
| Pages (from-to) | 162-166 |
| Number of pages | 5 |
| Journal | Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment |
| Volume | 30 |
| Issue number | 2 |
| State | Published - Apr 2009 |
| Externally published | Yes |
Keywords
- HVOF
- Nano-sized rare-earth modification
- WC-12Co coating
- Wear resistance
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