The main size determination by ultrasonic velocity technique in basic tungsten carbide of ceramic metal composites

In this study, the main grain size of ceramic composites, made from tungsten carbide (WC) ? nickel (Ni) has been determined with ultrasonic velocity technique by using 2, 4 and 5 MHz transducers. Samples were sintered at different temperatures ranging from 1000°C to 1300°C in Argon atmosphere. SEM (Scanning Electron Microscopy) analysis? are used after sintering process. The production of ceramic metal composites using WC powders plated with NiCl2 by electroless method were also attempted. Ultrasonic velocity-grain size master graph was plotted using 2, 4 ve 5 MHz ultrasonic transducer.This work has shown the relation of ultrasonic velocity and average grain size of samples.by this work, we have seen that the ultrasonic velocities of our composite samples are increasing with the average grain size of the samples.