Tantalum (Ta) alloys have been widely used as bone repair materials due 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 ± 0.3) wt%. Cortex-like rough morphology (Ra 1.504 μn) 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 of Ta 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.

钽（Ta）合金由于其出色的生物相容性而被广泛用作骨修复材料。在目前的工作中，通过微弧氧化和水热处理成功地在Ta上制备了具有微/纳米分级结构的掺锌（Zn）陶瓷涂层。Zn离子的含量为约（1.35±0.3）重量％。皮质类粗糙的形态（镭在Ta的表面可以清楚地观察到1.504μn）带有不规则蠕虫状狭缝的现象。更重要的是，类似于天然骨骼结构的涂层可以受控且持续的方式释放Zn，Ca和P离子。用陶瓷涂层功能化后，Ta的耐蚀性得到了极大的改善，这通过电位动力学极化试验得以证实。涂层与底材之间的结合强度可高达18.9N。此外，在浸入模拟体液（SBF）中三周后，MAOs-HT @ Ta的表面被骨状磷灰石覆盖，显示出出色的生物活性。这些结果表明， Ta上创新的结合Zn的微米/纳米分层涂层可以用作骨科植入物的有前途的候选材料。