Construction of Zn-incorporated Micro/Nano Hierarchical Structure Coatings on Tantalum

作     者：Yongjie Wei Yang Hu Mingrui Li Dongdong Li Yongjie Wei;Yang Hu;Mingrui Li;Dongdong Li

作者机构：Key Laboratory of Automobile Materials of MOEDepartment of Materials Science and EngineeringJilin UniversityChangchun 130012China 

出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)

年 卷 期：2020年第17卷第6期

页      面：1186-1195页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0836[工学-生物工程] 0702[理学-物理学] 

基　　金：This work is supported by the National Natural Science Foundation of China(Nos.51627805 and U19A2085) the Science and Technology Project of Jilin Province Education Department(No.JJKH20190148KJ) the Optical Valley Science Research Project,WEHDZ,(No.2019001). 

主　　题：micro-arc oxidation micro/nano hierarchical structure bioactivity coatings corrosion resistance 

摘      要：Tantalum(Ta)alloys have been widely used as bone repair materials duc to their excellent biocompatibility.In present work,zinc(Zn)incorporated ceramic coatings with micro/nano hierarchical structure were successfully fabricated on Ta by micro-arc oxidation and hydrothermal treatment.The content of Zn ions is about(1.35士0.3)wt%.Cortex-like rough morphology(Ra:1.504μm)with irregular vermiform slots can be clearly observed on the surface of Ta.More importantly,the coatings resembling the structure of natural bone can release Zn,Ca,and P ions in a controlled and sustained manner.The corrosion resistance ofTa is greatly improved after functionalized with ceramic coatings,confirming by potentiodynamic polarization tests.The bonding strength between the coatings and substrates can be up to 18.9 N.Furthermore,the surface of MAOs-HT@Ta is covered by bonelike apatite after immersed in Simulated Body Fluid(SBF)for three weeks,showing excellently bioactivity.These results suggest that the innovative Zn-incorporated micro/nano hierarchical coatings on Ta may be used as promising candidates for orthopedic implants.