The Effect of AlN Content on the Properties of Al2O3-AlN Composite Ceramics Fabricated by Digital Light Processing

In this work, Al2O3-AlN composite ceramics with high bending strength and thermal conductivity were fabricated by Digital Light Processing (DLP). The influence of AlN content on the rheological cure behavior suspensions, as well microstructure, conductivity, ceramics, systematically investigated. result shows that viscosity ability suspensions decreased increase content, which are beneficial to spreading printing accuracy suspensions. Besides, can be improved due residual stress introduction AlN. Approaches employed minimize formation AlON in optimizing amount sintering temperature. 31.72 ± 0.45 W/(m·K) 572.73 59.40 MPa, respectively, much higher than those Al2O3 under same condition. Finally, complex-shaped components have been successfully DLP, may provide an opportunity broaden application heat dissipation components.