Department of Industrial Engineering, University of Padova, Padova I-35131, Italy; Ceramics Department, National Research Centre, Cairo 12622, Egypt.
Department of Management and Engineering, University of Padova, Vicenza I-36100, Italy.
Mater Sci Eng C Mater Biol Appl. 2019 Oct;103:109794. doi: 10.1016/j.msec.2019.109794. Epub 2019 May 25.
Ti6Al4V components, for biomedical and aerospace sectors, are receiving a great interest especially after the advent of additive manufacturing technologies. The most used techniques are Selective Laser Sintering (SLS), Selective Laser Melting (SLM) and Electron Beam Melting (EBM). In the current research, we developed 3D-printed Ti6Al4V scaffolds by Direct Ink Writing (DIW) technology. Appropriate ink formulations, based on water-titanium powder suspensions, were achieved by controlling the rheological properties of the developed inks. After printing process, and drying, the printed components were sintered at 1400 °C under high vacuum for 3 h. Highly porous titanium scaffolds (with porosity up to 65 vol%) were produced and different geometries were printed. The influence of the porosity on the morphology, compression strength and biocompatibility of the scaffolds was investigated.
Ti6Al4V 零件在生物医学和航空航天领域受到了极大的关注，尤其是在增材制造技术出现之后。最常用的技术是选择性激光烧结（SLS）、选择性激光熔化（SLM）和电子束熔化（EBM）。在当前的研究中，我们通过直接墨水书写（DIW）技术开发了 3D 打印 Ti6Al4V 支架。通过控制所开发墨水的流变性能，实现了基于水-钛粉悬浮液的合适墨水配方。打印后，在 1400°C 下进行干燥，并在高真空下烧结 3 小时。制备了具有高达 65vol%孔隙率的高多孔钛支架，并打印出不同的几何形状。研究了孔隙率对支架形态、压缩强度和生物相容性的影响。
