电沉积含氟羟基磷灰石/纳米二氧化钛复合涂层的表征与性能研究  

Characterization and performance research of electrodeposited FHA/n-TiO_2 composite coating

作　　者：黄春鹏[1] 管东华[2] 张丽[1] 王剑[3] 

机构地区：[1]海南口腔医院,海南海口570105 [2]广东省口腔医院,广东广州510280 [3]四川大学华西口腔医学院,四川成都610041

出　　处：《电镀与涂饰》2011年第12期73-75,共3页Electroplating & Finishing

基　　金：海南省自然科学基金资助项目(809054);海南省卫生厅科研资助项目(琼卫2009-83)

摘　　要：根据含氟羟基磷灰石(FHA)陶电沉积瓷技术,将纳米二氧化钛微粒加入电解液中,在钛基体表面进行电化学复合共沉积,获得了含氟羟基磷灰石复合纳米TiO2涂层(FHA/n-TiO2)。对FHA/n-TiO2纳米复合涂层进行了真空烧结处理,并通过X射线衍射(XRD)、扫描电镜(SEM)、红外光谱(IR)、X射线光电子能谱(XPS)等技术对其进行了表征,比较了HA、FHA和FHA/n-TiO2涂层在柠檬酸改性的磷酸缓冲溶液中的抗溶解性能和结合强度。结果表明,真空烧结处理可使复合涂层中晶体的择优取向发生改变,晶体形态由针状转变为颗粒状;在FHA涂层中复合纳米TiO2微粒可以显著提高涂层与钛基体的结合强度而不影响其抗溶解性。Based on the electrodeposition of fluorine- containing hydroxyapatite （FHA） ceramics, a FHA/nano-TiO2 composite coating was obtained by co-electrodeposition on Ti surface after addition of nano-TiO2 to electrolyte. The FHA/nano-TiO2 coatings were treated by vacuum sintering and characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, infrared spectroscopy （IR）, and X-ray photoelectron spectroscopy （XPS）. The dissolution resistance of the composite coating in citrate-phosphate buffer and its adhesion were compared with HA and FHA coatings. The results showed that the preferred crystal orientation of FHA/nano-TiO2 composite is changed by vacuum sintering and the crystal shape varies from needle-type to granular-type. The combination of nano-TiO2 particles remarkably improves the adhesion of FHA coating to Ti substrate, but slightly affects its dissolution resistance.

关 键 词：钛基体 二氧化钛 含氟羟基磷灰石 纳米复合涂层 电沉积 

分 类 号：TQ174.453[化学工程—陶瓷工业]