Characteristics and in vitro biological assessment of (Ti, O, N)/Ti composite coating formed on NiTi shape memory alloy
| Autor: | Min Wang, Tao Sun, Langping Wang, William W. Lu, Ho-Wang Tong |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Biocompatibility Metallurgy Metals and Alloys Titanium alloy Surfaces and Interfaces engineering.material Cell morphology Plasma-immersion ion implantation Surfaces Coatings and Films Electronic Optical and Magnetic Materials X-ray photoelectron spectroscopy Coating Nickel titanium Materials Chemistry engineering Surface roughness Composite material |
| Zdroj: | Thin Solid Films. 519:4623-4628 |
| ISSN: | 0040-6090 |
| Popis: | In this investigation, plasma immersion ion implantation and deposition (PIIID) was used to fabricate a (Ti, O, N)/Ti coating on NiTi shape memory alloy (SMA) to improve its long-term biocompatibility and wear resistance. The surface morphology, composition and roughness of uncoated and coated NiTi SMA samples were examined. Energy dispersive X-ray elemental mapping of cross-sections of (Ti, O, N)/Ti coated NiTi SMA revealed that Ni was depleted from the surface of coated samples. No Ni was detected by X-ray photoelectron spectroscopy on the surface of coated samples. Furthermore, three-point bending tests showed that the composite coating could undergo large deformation without cracking or delamination. After 1 day cell culture, SaOS-2 cells on coated samples spread better than those on uncoated NiTi SMA samples. The proliferation of SaOS-2 cells on coated samples was significantly higher at day 3 and day 7 of cell culture. |
| Databáze: | OpenAIRE |
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