Meng Xianwei, Kwon Tae-Yub, Yang Yunzhi, Ong Joo L, Kim Kyo-Han
Institute for Biomaterials Research & Development, Kyungpook National University, Daegu, South Korea.
J Biomed Mater Res B Appl Biomater. 2006 Aug;78(2):373-7. doi: 10.1002/jbm.b.30497.
Hydroxyapatite (HA) coatings were deposited on titanium substrates by electrophoretic deposition (EPD) at constant voltage and dynamic voltage, respectively. Various surface morphologies were observed under different type of voltages. Under a constant voltage of 20 V, a dense HA coating could be prepared. Under a constant voltage of 200 V, big HA particles were deposited and the coating was porous. Under a dynamic voltage, a continuous gradient HA coating could be obtained. HA coatings were characterized with a field emission-scanning electron microscopy (FE-SEM) and an X-ray diffraction (XRD). XRD indicated no significant HA decomposition when the coatings were sintered for 2 h at 800 degrees C.
分别通过在恒定电压和动态电压下的电泳沉积（EPD），将羟基磷灰石（HA）涂层沉积在钛基底上。在不同类型的电压下观察到了各种表面形态。在20V的恒定电压下，可以制备出致密的HA涂层。在200V的恒定电压下，沉积了大的HA颗粒，涂层是多孔的。在动态电压下，可以获得连续的梯度HA涂层。通过场发射扫描电子显微镜（FE-SEM）和X射线衍射（XRD）对HA涂层进行了表征。XRD表明，当涂层在800℃下烧结2小时时，HA没有明显分解。
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