钛表面FHAP涂层的电沉积制备及其FTIR特征研究  

Preparation of Fluoridated Hydroxyapatite Coatings on Titanium by Electrolytic Deposition and Its FTIR Characteristics

作　　者：黄勇[1] 庞小峰[1,2] 李滚[1] 严雅静[1] 韩曙光[1] 曾红娟[1] 

机构地区：[1]电子科技大学生命科学与技术学院神经信息教育部重点实验室,四川成都610054 [2]中国科学院国际材料物理中心,辽宁沈阳110015

出　　处：《光谱学与光谱分析》2012年第7期1771-1774,共4页Spectroscopy and Spectral Analysis

基　　金：国家(973计划)项目(2007CB936103;2011CB503700)资助

摘　　要：在含有Ca2+,PO34-和F-的电解液中,用电化学恒电流方法,在工作电流为0.9mA温度为60℃的条件下沉积60min,在医用钛(Ti)表面上制得含氟羟基磷灰石(FHAP)涂层。采用扫描电镜(SEM)、能量弥散X射线谱(EDS)、X射线衍射(XRD)对涂层进行表征,用傅里叶变换红外光谱(FTIR)考察了氟离子的引入对涂层构象和生物活性的影响。结果表明:氟部分取代磷灰石中的羟基,FHAP晶格常数变小,涂层相貌由疏松的微米级的菊花瓣状变化为致密的纳米级的尖锥状。FTIR分析表明,涂层中羟基的伸缩和弯曲振动模式的对称性发生了改变,模拟体液浸泡后涂层覆盖碳磷灰石,涂层生物活性良好。Fluoridated hydroxyapatite coatings （FHAP） were prepared on titanium substrate by electrochemical deposition tech nique containing Ca2＋ , PO4^3- , and F ions. The deposition was all conducted at a constant current of 0. 9 mA for 60 min at 60 ℃. The as-prepared coatings were exa mined by scanning electron microscope （SEM）, energy-dispersive Xray spectroscopy （EDS）, Fourier transform infrared spectroscopy （FTIR） and Xray diffraction （XRD） tests. The results indicate that the FHAP cryatals take the morphology of nanoscale-rodlike cone rather than the micron-daisy petal, and the composite coating becomes more compact. The FTIR test indicates that the symmetry of stretching and bending vibration modes of hydroxyl changed, simu- lated body fluid immersion test proved that the FHAP coating had induced carbonate-apatite formation, indicating that the com- posite coating possesses excellent biocompatibility.

关 键 词：电沉积 FHAP涂层 FTIR 

分 类 号：TB333[一般工业技术—材料科学与工程] O646[理学—物理化学]