Jia Min Wu
Huazhong University of Science and Technology, China
Title: Research progress in additive manufacturing of ceramics and some related applications
Biography
Biography: Jia Min Wu
Abstract
Compared with traditional methods, additive manufacturing (AM) technology has shown great advantages in preparing high-performance polymer and metal parts with complex shape. However, it is difficult to prepare high-performance ceramic parts with complex shape by AM technology. So far, Prof. Shi Yu-Sheng’s group in Huazhong University of Science and Technology has done many researches on the preparation of various ceramic materials via Selective Laser Sintering (SLS) and Stereo Lithography Apparatus (SLA). Regarding SLS, three methods, namely mechanical mixing, solvent evaporation and dissolution-precipitation, were used to prepare ceramic-polymer composite powders with good fluidity. Subsequently, porous cordierite, kaolin and Si3N4 ceramic parts with high porosity were prepared by SLS. In order to acquire dense ceramic parts, Cold Isostatic Pressing (CIP) process was used to densify the SLSed green parts, and Al2O3, ZrO2 and SiC ceramic parts with high density and complex shape were successfully prepared by the SLS/CIP hybrid technology. In the recent research of Prof. Shi’s group, dense Al2O3 and ZrO2 ceramic parts with high density and high precision were prepared by Stereo Lithography Apparatus (SLA), in which the raw materials and AM equipment were all developed independently by Prof. Shi’s group. On the basis of above researches, the SLS and SLA technologies were used to prepare high-performance ceramic parts in the application of ceramic dental restoration, honeycomb ceramics, etc.