Study of Electrical and Structural Properties of WC-Co Composites

Abstract

A study was conducted on the electrical properties of WC-Co composites with increasing volume percentages of Co (6.0, 7.0, 10.0, 14.0)
over temperatures ranging from 0 to 200 °C. The measurement was performed using two-probe method to examine how the volume fraction
and the morphology of Co particles affect the electrical behavior of WC-Co composite. It was observed that above 10 volume percentage of
Co the composite showed higher conductivity which might be due to the percolation effect. Below 10 volume %, the electrical conductivity
behavior is still similar to that of pure WC. X-ray characterization was performed to provide a structural view of the WC-Co composites.