Mg中间层对纳米钛表面TiO_2薄膜微结构和动态凝血时间的影响

Influence of Mg Interlayer Film on Microstructures and Kinetic Clotting Time of TiO_2 Film on Nano-grained Ti

采用直流磁控溅射技术在纳米钛表面沉积Mg/TiO_2双层薄膜,研究了Mg中间层对纳米钛表面TiO_2薄膜微结构、动态凝血时间和界面结合力的影响。结果表明,Mg中间层对纳米钛表面TiO_2薄膜微结构、动态凝血时间和界面结合力有显著影响。预制Mg中间层后,纳米钛表面TiO_2薄膜由金红石相(含少量锐钛矿)转变为MgTiO_3、Ti_2O_3和少量金红石相;纳米钛表面TiO_2薄膜沿Mg膜晶界生长成微米级团簇,而团簇内部具有纳米畴特征;纳米钛表面TiO_2薄膜的凝血时间由17 min提高到40 min;纳米钛表面TiO_2薄膜的界面结合力由17N提高到36 N。

Influences of the Mg interlayer film on microstructures,kinetic clotting time and interface bonding force of TiO_2 film deposited on nano-grained Ti（NG-Ti） by DC magnetron sputtering technology were researched.The results show that Mg interlayer film has significant influences on the microstructures, kinetic clotting time and interface bonding force of TiO_2 film.Mg interlayer film makes the structure of TiO_2 film on NG-Ti transform from rutile phase containing a few anatases to MgTiO_3,Ti_2O_3 and a few rutile phases.It makes TiO_2 film grow into the micro-scale clusters with the nano-scale domains along the grain boundaries of the Mg film.These lead to the increases of the clotting time of TiO_2 film from 17min to 40min and of the interface bonding force from 17N to 36N also.