摘要
在NaF和H3PO4水溶液体系中,用电化学阳极氧化法在钛板表面形成一层结构规整有序的高密度TiO2纳米管阵列。随后在阳极氧化的钛基材表面沉积磷酸钙盐涂层,再经碱热处理使磷酸钙涂层转变为羟基磷灰石涂层。扫描电镜(SEM)观察了TiO2纳米管的微观结构以及生成的羟基磷灰石的形貌,X射线衍射仪(XRD)分析了涂层的相组成,电化学工作站(CHI660)研究了试样在模拟体液中的极化行为。结果显示,Ti金属表面制备的规整的TiO2管直径约100nm左右。电沉积涂层CaHPO4.2H2O经碱处理后转变为羟基磷灰石。
High density, well ordered and uniform titanium oxide nanotube arrays were fabricated on the surface of titanium substrate by electrochemical anodic oxidation in 0.5 M H3PO4 ＋ 0.138 M NaF solution. Then the calcium phosphate coating, electrodeposited on the anodized surface of Ti, was converted to hydroxyapatite coatings in alkaline solution in this work. The morphology of titanium oxide nanotube and the coating were examined by means of scanning electron microscope（SEM）. The phase constitutions of the coating were determined by X-ray diffractometer （XRD）. The polarization phenomenon of the samples in simulated body fluid has been studied by the CHI660 Electrochemical Workstation. The results demonstrate that titanium oxide nanotube was about 100nm in diameter. In addition the electrochemically deposited coating was dicalcium phosphate dihydrate （CaHPO4·2H2O, DCPD）, and then was transformed into hydroxyapatite after treated with alkaline solution.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2007年第2期249-252,共4页
Journal of Materials Science and Engineering
基金
江苏省自然科学基金资助项目(BK2004129)
关键词
电化学沉积
羟基磷灰石
TiO2管
electrochemical deposition
hydroxyapafite
TiO2 nanotubes
作者简介
王月勤（1981-）,硕士研究生,研究方向：纳米材料学.
陶杰,教授,博士生导师.E-mail：taojie@nuaa.edu.cn.通讯作者
