Material loss of infiltrated W-10wt.%Cu by alumina particles propelled by a high-velocity-oxy-fuel system

Abstract W-Cu Composites were fabricated by three powder particles with average particle sizes of 2, 6 and 8 μm at compressing pressure between 350 and 550 MPa. Sintering and infiltration rout was employed as fabrication method. Erosion test was done by means of HVOF at 2400 °C at the velocity of 1200 m.s − 1 . The obtained results were discussed based on microstructure evolution, conductivity and hardness. It was found that, there is an indirect relation between erosion resistance and electrical resistivity. Also, composites prepared by fine particles exhibit higher erosion resistance due to higher hardness. Studied composites show erosion loss ratio in the range of 65–95%.