溶胶-凝胶法在钛表面制备钛/羟基磷灰石生物涂层  

Sol-gel Derived Titania/Hydroxyapatite Bioactive Layer on Titanium Substrate

作　　者：王文焱[1,2] 卢高[1,2] 谢敬佩[1,2] 王爱琴[1,2] 

机构地区：[1]河南科技大学材料科学与工程学院,洛阳471003 [2]河南省有色金属材料科学与加工技术重点实验室,洛阳471000

出　　处：《表面技术》2011年第5期21-24,共4页Surface Technology

基　　金：河南省教育厅自然科学研究计划(2007430003);河南科技大学实验开发基金(SY0708053);河南科技大学博士基金项目;河南省科技攻关项目(084300510006)

摘　　要：以硝酸钙和五氧化二磷为前躯体,使用溶胶-凝胶法制备出羟基磷灰石,并使用浸渍提拉法在纯钛表面合成羟基磷灰石涂层。使用XRD对涂层中的相结构进行分析,以确定不同加热温度以及不同涂层层数对羟基磷灰石涂层性能的影响。结果表明:随加热温度升高,羟基磷灰石的结晶度和体积分数先升后降。在800℃下,羟基磷灰石的结晶度最高,体积分数也最大;羟基磷灰石涂层层数的增加,会使羟基磷灰石的体积分数上升,但是对涂层中的其它物相以及羟基磷灰石的结晶度并无影响。此外,涂层与基体之间的结合强度在涂层层数为1层时最大。The calcium nitrate and phosphorus pentoxide were used as precursor to prepare hydroxyapatite layer by sol-gel method, followed by a dipping-coating method to coat hydroxyapatite layer onto Ti. Phase formation was investigated by XRD to study the influence of temperature and thickness of layer on the property of hydroxyapatite layer. According to the experimental results, with lifting of the heating temperature, crystallinity and volum fraction of hydroxyapatite in the layer first increase and then drop. The crystallinity and volurn fraction of hydroxyapatite in the layer are best when heated at 800℃. With the increase of thickness of the layer, the content of hydroxyapatite will increase at the same time. In addition, the content of other phase and crystallinity of hydroxyapatite in the layer will stay the same. Additionly, the adhesion strength of the layer reaches the strongest when the layer is one.

关 键 词：溶胶一凝胶法 羟基磷灰石 钛 生物材料 

分 类 号：TG174.45[金属学及工艺—金属表面处理]