Hydroxyapatite thin film coatings on nanotube-formed Ti–35Nb–10Zr alloys after femtosecond laser texturing
作者： Yong-Hoon Jeong , Han-Cheol Choe , William A. Brantley , Ik-Bu Sohn
DOI: 10.1016/J.SURFCOAT.2012.11.066
关键词:
摘要: Abstract To achieve excellent biocompatibility of metal-based implants, hydroxyapatite thin film coatings on nanotube-formed Ti–35Nb–10Zr alloys after femtosecond laser texturing have been investigated. Three groups samples were prepared: (1) microtextured surfaces using (FS) laser, (2) nanotube formed by anodization, and (3) vapor-deposited a physical electron beam method the ternary alloy. The surface morphology was examined x-ray diffractometry, field-emission scanning microscopy, energy-dispersive spectroscopy. investigate ion release, potentiodynamic polarization testing carried out in 0.9%NaCl solution, wettability tests MG 63 osteoblast-like cell culture studies performed three to evaluate contact angle growth morphology, respectively. exhibited equiaxed β phase structure. FS laser-treated showed circular traces with diameters 28 ± 1.5 μm hole separations 50 μm, nanotubes had 180 ± 15 nm compositions consistent TiO 2 , Nb O 5 ZrO . structure anatase, rutile β-titanium diffraction peaks, whereas HA-coated hydroxyapatite, anatase peaks. HA displayed desired role decreasing metal release lower current density value, wider passive regions compared other surfaces. lowest From FE-SEM observations, attachment spreading 63 cells significantly higher tendency for covered coating nanotubes.
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