3D打印Ti-6Al-4V钛合金表面纳米孔洞制备技术

目的 通过3D打印技术制得钛合金,并构建出微米级多孔粗糙表面,再通过阳极氧化表面处理技术在微米级多孔粗糙表面构建出纳米级结构.方法 首先,通过高压水处理与酸蚀处理相结合的方法,对3D打印钛合金表面进行前处理,去除不良结合的球形粉末颗粒,降低3D打印钛合金表面的粗糙度及各向异性.然后,通过阳极氧化处理,在3D打印钛合金表...

The Preparation of Nano-pore on Ti-6Al-4V Titanium Alloy Surface by 3D Printing

Micron-level porous rough surface was firstly constructed on the surface of titanium alloy by 3D-printing technology, and then nano-level structure was constructed on the micron-level porous rough surface by surface technology. Firstly, the surface of 3D-printed titanium alloy was pretreated by the combination of high pressure water treatment and acid etching treatment to remove the spherical powder particles with bad bonding and reduce the surface roughness and anisotropy of 3D-printed titanium alloy. Then, through anodic oxidation treatment, TiO2 periosteum layer with nanoscale holes was prepared on the surface of 3D-printed titanium alloy. This preparation method solves the problems of large anisotropy on the surface of 3D printed titanium alloy, which leads to uneven electric field discharge in the subsequent electrochemical process and poor stability of TiO2-like periosteum layer formation. The occurrence of unstable discharge in anodic oxidation treatment is inhibited, the surface color of the film is uniform, and it is firmly combined with titanium or titanium alloy. Thus, the nano-layer structure of 3D printed titanium alloy micro-surface is constructed. As a result, the film formation rate and stability of 3D-printed titanium alloy surface film prepared by this process are good, it''s a three-dimensional network, there are small holes in the big hole, the structure is conducive to cell adhesion, differentiation and proliferation on its surface, and is an ideal medical implant material.