Title :
Fabrication of Nanoporous surface on biomedical NiTi alloy by surface dealloying of Ni
Author_Institution :
Sch. of Mater. Sci. & Eng., Chongqing Univ., Chongqing, China
Abstract :
Inter-connected nanoporous surface on biomedical NiTi alloy is successfully fabricated by surface dealloying of Ni in a solution containing H2O2 and HNO3. The modified surface layer is believed to be mainly consisted of titanium oxide. Inductive coupled plasma emission spectroscopy (ICP-ES) measurement of solution after dealloying process indicates the much higher concentration of Ni than that of Ti. The removing of Ni from the surface and formation of titanium oxide improves the biocompatibility of NiTi alloy. At the same time, the formed inter-connected nannoporous topography can also benefit osseointegration of implants.
Keywords :
biomedical materials; nanobiotechnology; nanofabrication; nanoporous materials; nickel alloys; plasma materials processing; prosthetics; surface alloying; titanium alloys; titanium compounds; NiTi; TiO2; biocompatibility; biomedical alloy; implants; inductive coupled plasma emission spectroscopy; interconnected nannoporous topography; modified surface layer; nanoporous surface; osseointegration; surface dealloying; titanium oxide; Corrosion; Fabrication; Implants; Nanoporous materials; Nickel alloys; Shape memory alloys; Surface morphology; Surface topography; Surface treatment; Titanium;
Conference_Titel :
Nanoelectronics Conference (INEC), 2010 3rd International
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3543-2
Electronic_ISBN :
978-1-4244-3544-9
DOI :
10.1109/INEC.2010.5424806
