Preparation and surface modification of 3D printed Ti-6Al-4V porous implant

• 作者: Chun-Yong Liang Xiao-Jing Jiang Rui-Long Ji Bao-E Li Xian-Rui Zou Hong-Shui Wang Jing-Zu Hao Tai Yang
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 1164-1172
• 页数: 9页
• 语种: 英文

摘要

Three-dimensional(3D)printed titanium alloy implants hold enormous potential in orthopedic applica-tions to avoid stress shielding.However,titanium alloy is bioinert,limiting its application and making surface mod-ification a necessity.In this paper,porous implants were treated by acid etching and anodizing to improve the bioactivity,which was evaluated by simulated body fluid(SBF)immersion test.The results showed that,after sur-face modification,micro-nanocomposite structures were obtained on the titanium surface,and after immersing in SBF for 2 weeks,the implants showed a drastically enhanced apatite forming ability,confirming improved bioactivity.However,the surface structures were different at different positions and it is believed that this phe-nomenon is closely related to the different current densities of the surfaces during anodic oxidation.Our research evaluates the effect of anodic oxidation at different volt-ages on the surface modification and provides a reference for improving the bioactivity of the medical porous implant surface prepared by 3D printing.