The ceramic core is one of the key factors for successful preparation of hollow blades,which determines the dimensional accuracy,pass rate and preparation cost of blades.However,the traditional manufacturing technology has some disadvantages such as complicated process and long preparation period.3D printing technology has the advantages of mold-free,rapid prototyping,personalized customization of 3D parts,and it is gradually applied to the preparation of complex shape ceramic cores.This article systematically summarized the research progress of four mainstream 3D printing technologies in the field of ceramic cores:binder jetting,selective laser sintering,direct ink writing and stereolithography.And the influence of debinding and sintering process on the properties of 3D printed ceramic cores was introduced.Finally,the future development of 3D printed ceramic cores was prospected.
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