Sintering of WC-12%Co processed by binder jet 3D printing (BJ3DP) technology

A study was carried out to evaluate the sintering densification, shrinkage and mechanical properties of WC-12%Co powders processed by binder jet 3D printing (BJ3DP). After debinding, vacuum sintering at 1435–1485 °C for 45 min yielded low sintered densities in the range of 13.1–13.5 g/cm3. Near theoretical densities of 14.1–14.2 g/cm3 were achieved by sintering the parts under a pressure of 1.83 MPa at 1485 °C for 5–30 min. Shrinkage in the...