Structure and properties of Ti/HAp composites prepared by indirect 3D printing
LIU Yanjun1, LIU Ye1,2, TAN Yanni1
1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. Shenzhen Uprise 3D Corporation, Shenzhen 518132, China
Abstract：Rb-Hydroxyapatite (Rb-HAp) powders with different Rb content were prepared by ion-doped modification method, and then Ti/Rb-HAp composites were prepared by indirect 3D printing method. The morphology and phase composition of the composites were analyzed, the mechanical properties of the composites were determined, and the biological properties of the composites were studied by cell culture and cell proliferation and differentiation experiments in vitro. The results show that Ti/Rb-HAp composites have higher porosity, and the porous structure is favorable for the inward growth of new bone tissue and the transport of body fluid. The addition of Rb can improve the bending strength and compressive strength of Ti/HAp composites, and the compressive strength increases slightly with the increase of Rb content. Compared with the pure Ti group, Ti/Rb-HAp composites promote the proliferation and ALP activity of MG-63 cells, so the composite has good cytocompatibility. After immersion in simulated body fluid, a dense apatite layer formed on the surface of the composite, indicating that the Ti/HAp composites have excellent biological activity.
刘晏军, 刘业, 谭彦妮. 间接3D打印制备Ti/HAp复合材料的结构与性能[J]. 粉末冶金材料科学与工程, 2021, 26(6): 515-524.
LIU Yanjun, LIU Ye, TAN Yanni. Structure and properties of Ti/HAp composites prepared by indirect 3D printing. Materials Science and Engineering of Powder Metallurgy, 2021, 26(6): 515-524.
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2021, Vol. 26 
