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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。
The Mg / TiO 2 bilayer films were deposited on the surface of nanostructured titanium by DC magnetron sputtering. The effects of Mg interlayer on the microstructure, dynamic coagulation time and interfacial binding of TiO 2 films on the surface of nanostructured titanium were studied. The results show that the Mg interlayer has a significant effect on the microstructure, dynamic coagulation time and interfacial binding of TiO2 films on the surface of nano-titanium. After the pretreatment of Mg intermediate layer, the TiO_2 film on the surface of nano-titanium is changed from rutile phase (including a small amount of anatase) to MgTiO_3, Ti_2O_3 and a small amount of rutile phase. The TiO_2 film on nano-titanium surface grows into micron clusters along the grain boundary of Mg film, The nanostructured TiO 2 films on the surface of nanostructured titanium have the characteristics of nano-domain. The coagulation time of TiO 2 film on the surface of nanostructured titanium increased from 17 min to 40 min.