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采用微弧氧化处理技术在纯钛表面制备了含钙磷的多孔生物活性复合陶瓷膜,研究微弧氧化时的电极频率对复合陶瓷膜的形貌、结构、成分和性能的影响。结果表明:在400~800Hz电极频率下,试样表面均形成了“火山口”喷发特征的含钙磷的多孔陶瓷膜层;膜层厚度随电极频率的升高而减少;膜层主要由锐钛矿相TiO2和金红石相TiO2组成,且金红石相TiO2的含量随电极频率的升高而增多,膜层表面在800Hz时出现大量钙磷盐的沉积,同时非晶现象明显;膜层中的Ca/P值随电极频率的升高而降低;膜层与基体的摩擦力临界载荷值随电极频率的升高呈先升后降的变化规律,在600Hz时的临界载荷值最大。
The porous ceramic composite membrane with calcium and phosphorus was prepared on the surface of pure titanium by micro-arc oxidation technique to study the influence of the electrode frequency on the morphology, structure, composition and properties of composite ceramic membrane. The results show that: at 400 ~ 800Hz electrode frequency, the surface of the sample formed a “craters” eruption of porous calcium phosphate ceramic membrane; film thickness decreases with increasing electrode frequency; the main film It is composed of anatase phase TiO2 and rutile phase TiO2. The content of rutile phase TiO2 increases with the increase of the electrode frequency. The deposition of a large amount of calcium and phosphoric salts on the surface of the membrane occurs at 800Hz, The value of Ca / P decreases with the increase of electrode frequency. The critical load value of friction between film and substrate increases first and then decreases with the increase of electrode frequency, and the critical load value is the highest at 600 Hz.