Abstract
The in-flight and deposition properties of three types of WC-17Co powder with different particle densities during a high-velocity oxygen fuel (HVOF) thermal spray process were investigated. Three types of powder exhibited similar velocity upon impact on the substrate surface. The powder with the lower particle density exhibited a higher temperature upon impingement process, resulting in the generation of a higher flattening ratio. Thus, the coating derived from the powder with the lower particle density possessed superior micro-hardness, porosity and surface roughness. However, the coating with the lowest particle density showed the poorest fracture toughness because of the generation of the largest amount of amorphous phase.
Original language | English |
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Pages (from-to) | 44-50 |
Number of pages | 7 |
Journal | China Welding (English Edition) |
Volume | 23 |
Issue number | 4 |
Publication status | Published - 25 Dec 2014 |
Externally published | Yes |
Keywords
- Deposition
- Flattening
- HVOF
- Particle density
- WC-17Co