摘要
通过微弧氧化成功的在两种含钾的电解质中制备了K2Ti6O13-TiO2/Ti复合生物陶瓷材料。XRD检测表明制备得到的陶瓷膜的主要成分是K2Ti6O13和金红石型TiO2,还有少量的锐钛矿型TiO2和K2Ti4O9。EDX线扫描检测结果说明陶瓷膜中的各相是相互交织的结合在一起的,能提高陶瓷膜与钛基体的结合强度。表面SEM形貌检测显示表面呈现多微孔的陶瓷结构。两种体系中制备的陶瓷膜经仿生溶液浸泡6d后能检测到明显的片状结构的HAp涂层,表明K2Ti6O13-TiO2/Ti生物陶瓷材料具有很强诱导HAp沉积的能力,生物活性很好。分析结果表明K2Ti6O13和金红石型TiO2成分的存在是陶瓷膜具有良好生物活性的关键所在。
K2Ti6O13-TiO2/Ti bioactive ceramic materials are prepared successfully by micro-arc oxidation in electrolyte solution only containing KOH and K2CO3. Their composition determined by XRD is mainly composed of futile and K2Ti6O13. Some anatase and K2Ti4O9 can be detected. The results of EDX show all phases of ceramic interweaved each other. This structure improved the tension between ceramic films and titanium substrate. The surface of coating is micro-porous ceramic structure. The K2Ti6O13 bioactive ceramic films＇ apatite inducing ability is evaluated in biological model fluids. After soaking in biological model fluids for 6 days, some platy structural HAp coating can be detected obviously. The results indicate K2Ti6O13-TiO2/Ti bio-ceramic coatings exhibit excellent capability of induction of bone-like apatite. The K2Ti6O13 and rutile are the key factors which ceramic films possess good bioactivity.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2008年第11期1871-1875,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(50674105)
关键词
钛
微弧氧化
陶瓷膜
生物活性
titanium
micro-arc oxidation
ceramic
bioactive
