医用纯钛表面载银钙磷涂层的制备研究

Preparation and Structural Characteristics of Ag-Loaded Calcium-Phosphate Coatings on Biomedical Pure Titanium

在含有Ca、P元素和纳米银的电解液中,通过微弧氧化处理在医用纯钛表面制备出兼具抗菌元素银和生物活性元素Ca、P的载银钙磷复合涂层。通过SEM、XRD和EDS研究了电压对涂层的表面形貌、相组成和元素特征的影响,并利用XPS对涂层元素组成和纵向分布进行了分析。结果表明,涂层表面布满微孔,且含有较大量Ca、P元素和纳米银颗粒,纳米银主要以氧化物形式存在,并可根据改变微弧氧化电压来调整涂层中Ca、P和银元素的含量。

Ag-loaded calcium-phosphate coatings were prepared by micro-arc oxidation of commercially pure titanium in the Ag-, Ca- and P-containing electrolytic solution. The phase composition, surface topography and elemental composition of the micro arc oxidized coatings were investigated by XRD, SEM, EDS and XPS analyses. The results show that the prepared coating is a porous oxidized layer and contains Ca, P and Ag revealed by element depth profile analysis. Furthermore, the structural and composition features of the prepared coatings could be adjusted by appling different pulse voltages during micro arc oxidation.