Sintering of polycrystalline diamond cutting tools

In this study, pressure-sintering experiments during direct sintering of diamond cutting tools has been conducted at 730 °C for 3–15 min with a pressure of around 350 MPa. For the matrix, the elements cobalt and nickel are used as the bonding phase and the α-bronze is used as the filling phase in various amounts. In microstructural characterization studies, various microstructural analyses were performed using the techniques of light microscopy, scanning electron microscopy (SEM), energy-disperse X-ray spectrography and image analysis.