1. School of Material Science and Engineering, Shanghai University, Shanghai 200444, China;
2. Université de Technologie Sino-Européenne de Shanghai, Shanghai 200444, China;
3. School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
Abstract：With the increasing demand for a high thrust-to-weight ratio and highly efficient aero-engines, the development of engine blades is moving towards a complex hollow structure, and therefore places greater demands for ceramic core with high-performance complex structures. Meanwhile, the additive manufacturing technology, based on the principle of lithography, can realize the preparation of ceramic cores with high precision, high speed and excellent comprehensive performance without metal molds. However, the state-of-the-art ceramic core preparation processes, based on lithography-based additive manufacturing, still faces several problems in controlling dimensional accuracy, optimizing the binding, sintering process and controlling crack deformation. Therefore, the research progress of the preparation and sintering process of lithography-based ceramic slurry is discussed, focusing on the comprehensive performance, based on the introduction of the principle and characteristics of lithography-based additive manufacturing technology. At last, the application examples of light-curing cores/shells in the precision casting of aero-engine blades and further application prospects are also introduced.
2022, 
