Wetting angle and infiltration velocity of Zr base bulk metallic glass composite

The contact angles of Zr47Ti13Cu11Ni10Be16Nb3 alloy on tungsten substrate were measured by sessile drop technique at the temperature range from 1023 to 1323 K and different processed time. Based on the morphology of the melt drop, the surface tension as function of processing temperature and holding time was obtained. Diffusion band was observed at the fringe of metallic drop, which confirms that the wetting between the melt and tungsten belongs to reactive wetting. The relationship between the flow velocity of melt and processing parameters, such as infiltration pressure, volume fraction of fibers and the filtration length, was calculated comprehensively.