纯钛表面水热合成法制备磷酸盐转化膜-羟基磷灰石复合涂层及其性能  

Preparation and Properties of Phosphate Conversion/Hydroxyapatite Composite Coating on Pure Titanium by Hydrothermal Synthesis

作　　者：徐玲利[1] 黄飞 任建 朱海明 史兴岭[1] 王庆良[2] XU Ling-li;HUANG Fei;REN Jian;ZHU Hai-ming;SHI Xing-ling;WANG Qing-liang(School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China;School of Materials Science and Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003 [2]中国矿业大学材料科学与工程学院,江苏徐州221116

出　　处：《材料保护》2020年第9期86-90,共5页Materials Protection

基　　金：江苏省自然科学基金(BK20160566)资助。

摘　　要：为解决以往制备羟基磷灰石(HA)方法存在的不足,采用水热合成法依次在纯钛表面制备磷酸盐转化膜(PCC)和羟基磷灰石(HA)涂层;采用扫描电子显微镜、X射线衍射仪、电化学工作站等进行表征,对制备羟基磷灰石涂层的最佳钙离子浓度进行了探究。结果证明:以含有Zn^2+,PO^3-4和NO^-3的溶液作为反应介质,在250℃条件下水热处理12 h可制得均匀致密的化学转化膜;在此基础上,以CaCl2溶液为介质,可在水热条件下制得原位生长的羟基磷灰石。其中,以0.25 mol/L CaCl2溶液为介质,在250℃下反应12 h,可获得均匀致密、与磷酸盐转化膜具有良好结合强度的羟基磷灰石涂层。电化学分析表明,磷酸盐转化膜-羟基磷灰石复合涂层对纯钛基体具有良好的保护作用。Phosphate conversion coatings and hydroxyapatite composite coatings were synthesized on the surface of titanium by two-step hydrothermal method.The coatings were characterized by scanning electron microscopy(SEM),X-ray diffractometry(XRD),etc.The optimal calcium ion concentration for the preparation of hydroxyapatite coatings was studied.Results showed that a dense and uniform titanium-zinc phosphate coating could be synthesized in solution containing Zn^2+,PO^3-4and NO^3-at 250℃for 12 h,which was followed by in-situ growing hydroxyapatite in the calcium chloride solution.The compact hydroxyapatite coating was obtained in a 0.25 mol/L calcium chloride solution at 250℃for 12 h,which also had good adhesion strength with titanium-zinc phosphate.Furthermore,electrochemical analysis showed that phosphate-hydroxyapatite composite coating provided good protection for pure titanium matrix.

关 键 词：钛 水热合成法 磷酸盐转化膜 羟基磷灰石 结合强度 耐腐蚀性能 

分 类 号：TG174[金属学及工艺—金属表面处理]