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根据电沉积磷灰石陶瓷技术,通过在含有Ca(NO3)2·4H2O、NH4H2PO4、NaNO3及H2O2的电解液中加入不同浓度的氟化钠作为引氟剂,在钛片表面进行电化学沉积,分别采用扫描电镜(SEM)、X射线衍射(XRD)、傅立叶变换红外光谱(FT-IR)、X射线光电子能谱(XPS)对所得涂层的表面形貌和理化性质进行分析。结果表明,通过上述方法可以在钛表面制备纳米晶含氟羟基磷灰石(FHA)涂层,涂层的含氟量与电解液中加入NaF的浓度有关。当NaF浓度低于0.012mol/L时,随着引氟量的增加,所得FHA涂层的含氟量也相应增加;当NaF浓度高于0.012mol/L后,涂层的含氟量不发生明显变化。
According to electrodeposition apatite ceramic technology, electrochemical deposition was performed on the surface of titanium by adding different concentrations of sodium fluoride as a fluorine scavenger in the electrolyte containing Ca (NO3) 2.4H2O, NH4H2PO4, NaNO3 and H2O2, The surface morphology and physicochemical properties of the resulting coatings were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) The results show that the fluorine-containing hydroxyapatite (FHA) nanocrystalline coating can be prepared on the titanium surface by the above method. The fluorine content of the coating is related to the concentration of NaF added to the electrolyte. When the NaF concentration is lower than 0.012mol / L, with the increase of the amount of fluorine, the fluorine content of the resulting FHA coating increases accordingly. When the NaF concentration is higher than 0.012mol / L, the fluorine content of the coating does not occur obvious change.