Fabrication of high performance ceramics with complex structures was the difficulty of traditional ceramic processing methods

with additive technology

the manufacturing restriction greatly reduces. However

how to use additive technology to realize the stable preparation of porous sample is still a key problem. The process of photocuring and sintering was studied and optimized for stereolithography of zirconia. The results show that the optimum parameters include 5s of exposure time

30μm of layer thickness and 1480℃ of sintering temperature for the DLP method. With these parameters

zirconia structure with regular porous units could be prepared

and the microhardness and relative density were 13.91GPa and 95% respectively. The industrial CT model was reconstructed and compared with the theoretical model

indicating the homogeneity at the macroscopic scale; the stress distribution

the compressive curve in elastic stage and the morphology of the cross section corresponded well with the FEM results

indicating the optimal value of compressive properties. High performance porous zirconia samples formed by stereolithography can provide a new choice for lightweight design in aviation field.