电泳沉积HA-Ti-Y_2O_3/ZrO_2复合涂层的研究

Electrophoretic Deposition of HA Ti Y_2O_3/ZrO_2 Composite Coating

为了制备均匀致密的HA -Ti -Y2 O3/ZrO2陶瓷涂层,在正丁醇介质中,以三乙醇胺为添加剂,将羟基磷灰石(HA)与Ti,Y2 O3/ZrO2按一定比例混合电泳沉积在钛基底上,得到了形貌稳定的HA -Ti -Y2 O3/ZrO2生物陶瓷涂层.研究了电场强度,电泳时间,添加剂用量对涂层品质的影响.用扫描电镜(SEM)对热处理后的涂层进行了观察,采用红外光谱仪(FTIR)和X射线仪(XRD)对涂层的形貌、组成及结构进行了表征.结果表明:在正丁醇作分散剂,三乙醇胺添加量为12 mL/L,电场强度30～60 V/cm,HA浓度为10～20 g/L,Ti为4～16 g/L,Y2 O3/ZrO2为6～12 g/L的条件下,可制得形貌较好的HA -Ti -Y2 O3/ZrO2复合陶瓷涂层.

Yttria stabilized zirconia bioceramic coating doped with hydroxyapatite (HA) and Ti (coded as HA Ti Y_2O_3/ZrO_2) with stable structure was prepared on (titanium) substrate by electrophoretic deposition in n butanol medium containing proper amounts of HA, Ti, and Y_2O_3/ZrO_2, in the presence of triethanolamine as the additive. The influences of the electric field intensity, electrophoretic duration, and additive concentration on the quality of the coating were studied. The chemical feature and phase composition of the heat treated coating were analyzed by means of Fourier transformation infrared spectrometry and X ray diffraction, respectively, while the microstructure and morphology of the coating were observed using a scanning electron microscope. As the results, it was suggested to prepare the HA Ti Y_2O_3/ZrO_2 composite coating of fine morphology using n butanol as the dispersant and 12 mL/L triethanolamine as the additive, at an electric field intensity of 30~60 (V/cm), an HA content of 10~20 g/L, a Ti content of 4~16 (g/L), and a Y_2O_3/ZrO_2 content of 6~12 g/L.