Low Cost HVAF for Thermal Spraying of WC-Co

In this research, a low cost high-velocity air-fuel (HVAF) system was developed and applied for thermal spraying of WC-Co coatings. The resulting coatings were evaluated using optical and scanning electron microscopy (SEM), X-ray diffraction (XRD) and Vickers microhardness measurements. The quality of sprayed WC-Co coatings shows that the developed HVAF system can be an alternative to the existing HVOF with substantial savings on operating costs.