钛表面制备多孔氧化物陶瓷层的实验设计

Experimental Design of Preparation of Porous Ceramic Oxide Layer on Titanium Surface

为提高生物医用金属钛材料表面的生物活性和生物相容性,以乙酸钙、β-甘油磷酸钠混合溶液作为电解液,采用微弧氧化实验方法,在金属钛表面制备出具有多孔结构的氧化物陶瓷层。用X射线衍射仪(XRD)、扫描电子显微镜(SEM)以及能谱分析仪(EDS)对氧化物陶瓷层的组成及结构进行了分析。结果表明:氧化物陶瓷层的主晶相为锐钛矿型二氧化钛,同时含有钛、金红石型二氧化钛以及钛酸钙相;试样表面形成大量的微孔,孔径1～3μm,孔洞分布均匀;电解液中的Ca、P元素也参与了反应,并沉积在氧化物陶瓷层内。通过此实验方法可以有效提高金属钛的生物活性和生物相容性。

In order to improve the surface bioactivity and biocompatibility of biomedical titanium, the porous ceramic oxide layer has been successful prepared on the titanium surface by the microarc-oxidation experimental method with calcium acetate and f3-glycerophosphate disodium mixed solution as electrolyte. The compositions and microstructures of the porous ceramic oxide layer were analyzed by X-ray diffraction （XRD） , scanning electron microscopy （SEM） and energy dispersive spectrometer （ EDS）. The results show that the major phase is anatase, also containing titanium, rutile and calcium titanate crystalline. A lot of pores were generated on the specimen surface, the pore size being lpma to 3trm, uniform distributed. The Ca, P elements of the electrolyte are also involved in the response, and deposited on the ceramic oxide layer. This experimental method can effectively improve the titanium bioactivity and biocompatibility.