电化学沉积法制备钛基HA涂层

Electrochemically Deposited Coatings of Hydroxyapatite on Titanium

摘要:

在钛基材表面获得羟基磷灰石（HA）涂层以改善钛与生物体的相容性，本项工作采用电沉积的方法在阳极氧化处理过的钛基体上制备了羟基磷灰石涂层。用扫描电子显微镜（SEM）、X射线衍射（XRD）等手段对涂层进行了表征。试验结果表明：电沉积初期的羟基磷灰石涂层呈多孔层片状：随电压、时间、电解液浓度的增大，涂层变厚，层片呈花瓣状发散排列：对基体阳极氧化处理有助于提高钛基与涂层的结合强度。

Abstract:

The hydroxyapatite coatings on an anodized titanium substrate were prepared by electrodeposition technique.Properties of coatings were investigated by scanning electron microscopy(SEM),X-ray diffraction(XRD)respectively.The results show that hydroxyapatite crystal is porous-like flakes at the beginning time of the deposition.The thickness of the coatings increase and its morphology changes from porous-like flakes to petal-like flakes with the increase of voltage,time and concentration of electrolyte.The bonding strength of coatings with the substrate is improved by anodic oxidation.