摘要
采用直流磁控溅射法分别在纳米晶体钛和粗晶粒工业纯钛表面沉积TiO2薄膜,研究了纳米钛基TiO2薄膜的结构形貌、形核、生长、晶体结构和体外生物活性。用扫描电镜和X射线衍射仪分析了薄膜的表面形貌和晶体结构,用体外模拟人体体液浸泡诱导羟基磷灰石生长实验表征薄膜的生物活性。结果表明:纳米钛基薄膜形核率高,薄膜非常致密、光滑,晶粒细小,仅为粗晶粒钛基TiO2薄膜晶粒尺寸的一半,约100nm;钛基材纳米晶体化可促进薄膜由锐钛矿相向金红石相转变;钛基材纳米化可显著提高自身及其表面TiO2薄膜的生物活性。
TiO2 thin films deposited on nano-grained titanium and coarse-grained commercial pure titanium by DC reactive magnetron sputtering were researched. The structural morphology,nucleation and growth,crystal structure and biological activity in vitro of films on nano-grained Ti were studied. Scanning electron microscopy and X-ray diffraction were employed to characterize the surface morphology and crystal structure of TiO2 thin films. Simulated body fluid immersion test in vitro induced hydroxyapatite growth was used to characterize the biological activity. The results show that nano-grained titanium has a strong induction of TiO2 film nucleation effect and rutile crystallization effect; the films on nano-grained Ti are more smooth,flat and uniform; the size of TiO2 grain on nano-grained titanium is about 100nm,half of that on commercial pure titanium; nano-grained titanium led to TiO2 films and itself better biological activity.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2010年第5期844-846,850,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(50772044)
江苏省自然科学基金重点资助项目(BK2007707)
关键词
TIO2薄膜
纳米晶体钛
生物活性
直流磁控溅射
TiO2 thin films
nano-grained titanium
bioactivity
DC reactive magnetron sputtering
