【摘要】 采用电沉积方法在钛金属基底上形成磷酸钙盐涂层 ,涂层经低温碱液处理获得羟基磷灰石涂层 .研究了电流密度、主盐浓度、电解液温度、沉积电量、低温碱液处理对涂层表面形貌的影响 ,并用 SEM、XRD和 IR对涂层的组成和结构进行分析 .结果表明 :电沉积磷酸钙盐涂层经低温碱液处理后得到纯的羟基磷灰石涂层 ,羟基磷灰石晶体呈针状结构 ;随电流密度、主盐浓度的增加 ,晶粒变粗 ,随电解液温度的升高 ,晶体发生变化 ,出现鳞片状结构 ;涂层质量随沉积电量的增加而增大更多还原

【Abstract】 An electrodeposition technique was adopted to fabricate calcium phosphate coatings on titanium substrate , the electrodeposited calcium phosphate coatings was converted to hydroxyapatite coatings in alkaline solution. The effects of experimental conditions such as the current density, concentration of salts, the temperature of electrolyte, quantity of electric charge, alkaline solution on the morphology of coatings was studied. SEM, XRD, IR were used to characterize the composition and the crystal structural of the coatings. The results show that the electrodeposited calcium phosphate coating was converted to pure needle-like hydroxyapatite crystals in alkaline solution, the size of crystals become stout with the increase of current density and concentration of salts, the crystals structural was changed to squama structural with elevating the temperature of electrolyte, the volume of coating increase with the increase of quantity of electric charge.更多还原