Garbacz H, Pisarek M, Kurzydłowski K J
Warsaw University of Technology, Faculty of Materials Science and Technology, Woloska 141, 02-507 Warsaw, Poland.
Biomol Eng. 2007 Nov;24(5):559-63. doi: 10.1016/j.bioeng.2007.08.007. Epub 2007 Aug 7.
The present work reports results of studies of corrosion resistance of pure nano-Ti-Grade 2 after hydrostatic extrusion. The grain size of the examined samples was below 90 nm. Surface analytical technique including AES combined with Ar(+) ion sputtering, were used to investigate the chemical composition and thicknesses of the oxides formed on nano-Ti. It has been found that the grain size of the titanium substrate did not influence the thickness of oxide formed on the titanium. The thickness of the oxide observed on the titanium samples before and after hydrostatic extrusion was about 6 nm. Tests carried out in a NaCl solution revealed a slightly lower corrosion resistance of nano-Ti in comparison with the titanium with micrometric grain size.
本研究报告了纯纳米钛2级在静液挤压后的耐腐蚀性研究结果。所检测样品的晶粒尺寸小于90纳米。采用包括俄歇电子能谱（AES）结合氩离子溅射在内的表面分析技术，研究了纳米钛表面形成的氧化物的化学成分和厚度。研究发现，钛基体的晶粒尺寸不影响钛表面形成的氧化物的厚度。静液挤压前后钛样品表面观察到的氧化物厚度约为6纳米。在氯化钠溶液中进行的测试表明，与微米级晶粒尺寸的钛相比，纳米钛的耐腐蚀性略低。
