Xie Jianhui, Luan Ben Li
Integrated Manufacturing Technologies Institute, National Research Council, 800 Collip Circle, London, Ontario, Canada N6G 4X8.
J Biomed Mater Res A. 2008 Jan;84(1):63-72. doi: 10.1002/jbm.a.31359.
This communication presents a novel technology to enhance the biocompatibility of bioinert Ti6Al4V alloy as implant materials for orthopaedic application. The surface of Ti6Al4V alloy was electrochemically activated in NaOH solution to create a porous structure with nanometer topographic features and an alkaline environment, thus promoting the formation of bone-like hydroxyapatite coating and enhancing the bonding strength of the coating. This innovative activation process was proved to be effective and essential. The activated surface was confirmed to be pure TiO2 and the formed coating was characterized of pure hydroxyapatite with a nanometer-scaled grain size structure by means of XPS, FESEM/SEM/EDX, XRD, and TEM techniques.
本通讯介绍了一种新技术，用于提高生物惰性Ti6Al4V合金作为骨科植入材料的生物相容性。Ti6Al4V合金表面在NaOH溶液中进行电化学活化，以形成具有纳米形貌特征的多孔结构和碱性环境，从而促进类骨羟基磷灰石涂层的形成并提高涂层的结合强度。这种创新的活化过程被证明是有效且必不可少的。通过XPS、FESEM/SEM/EDX、XRD和TEM技术确认活化表面为纯TiO2，形成的涂层为具有纳米级晶粒尺寸结构的纯羟基磷灰石。
