采用激光熔覆与等离子喷涂复合技术制备含氟羟基磷灰石(HA)生物陶瓷涂层，用HA、氟化钙(CaF2)、钛(Ti)混合粉末在Ti-6Al-4V 基体上用激光熔覆制备过渡层，其上以HA、CaF2 为原料用等离子喷涂技术制备富含Ca10(PO4)6 Fx (OH)2 -x 的陶瓷层。通过对涂层样品进行拉伸实验、模拟体液(SBF)浸泡的测试并结合X 射线衍射(XRD)、扫描电子显微和能谱(SEM/EDS)分析，研究了F 含量对涂层物相组成、结合强度、表面形貌、生物活性的影响。结果表明：激光熔覆与等离子喷涂复合技术制备的涂层可以提高结合强度至20.1 MPa，当x=1.5时达到最大值28.4 MPa；随着x 值的不断增大，涂层的结晶度提高、生物活性增强，但是涂层表面的裂纹数量增多。当x=1.0~1.5之间时涂层的综合性能最好。

A composite method combining the laser cladding and plasma spraying is adopted to prepare the fluorinated bio-ceramic composite hydroxyapatite (HA) coating. The mixed powder of HA, calcium fluoride (CaF2) and titanium (Ti) is laser cladded on the Ti-6Al-4V substrates to produce the transition layer, on which HA·CaF2 powder is plasma sprayed as Ca10 (PO4) 6Fx (OH)2-x rich ceramic layer. The influence of F content on the phase composition, bonding strength, surface morphology and biological activity of the composite coating is studied by tensile test, simulated body fluid (SBF) immersion test and X-ray diffraction (XRD)、scanning electron microscope and energy dispersive spectrometer (SEM/EDS) analysis. It is shown that the bonding strength of the above composite coating increases up to 20.1 MPa and reaches its maximum value of 28.4 MPa when x=1.5, the crystallinity and the biological activity of the coating as well as the number of the cracks in the coating surface increases with x, the coating with optimal comprehensive performance is obtained when x=1.0~1.5.