3D surface topography study of the biofunctionalized nanocrystalline Ti–6Zr–4Nb/Ca–P

• Published in: Materials characterization 2012-08, Vol.70 (Complete), p.55-62
• Main Authors: Jakubowicz, J., Adamek, G., Jurczyk, M.U., Jurczyk, M.
• Format: Article
• Language: English
• Subjects: 60 APPLIED LIFE SCIENCES; AMMONIUM PHOSPHATES; Biocompatibility; Biomaterials; Biomedical materials; CALCIUM NITRATES; CALCIUM PHOSPHATES; CHEMICAL COMPOSITION; CONNECTIVE TISSUE CELLS; Cross-disciplinary physics: materials science; rheology; CRYSTALS; Electrochemical techniques; ELECTROCHEMISTRY; Electrolytic cells; Etching; Exact sciences and technology; IMPLANTS; IN VITRO; MATERIALS SCIENCE; NANOSCIENCE AND NANOTECHNOLOGY; NANOSTRUCTURES; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; PHOSPHORIC ACID; Physics; POROUS MATERIALS; Profilers; ROUGHNESS; SCANNING ELECTRON MICROSCOPY; Solidification; Surface properties; SURFACE TREATMENTS; SURFACES; Surgical implants; Three dimensional; TITANIUM BASE ALLOYS; TOPOGRAPHY; X-RAY DIFFRACTION; ZIRCONIUM ALLOYS
• ISSN: 1044-5803; 1873-4189
• DOI: 10.1016/j.matchar.2012.05.006

In this work surface of the sintered Ti–6Zr–4Nb nanocrystalline alloy was electrochemically biofunctionalized. The porous surface was produced by anodic oxidation in 1M H3PO4+2%HF electrolyte at 10V for 30min. Next the calcium–phosphate (Ca–P) layer was deposited, onto the formed porous surface, using cathodic potential −5V kept for 60min in 0.042M Ca(NO3)2+0.025M (NH4)2HPO4+0.1M HCl electrolyte. The deposited Ca–P layer anchored in the pores. The biofunctionalized surface was studied by XRD, SEM and EDS. In vitro tests culture of normal human osteoblast (NHOst) cells showed very good cells proliferation, colonization and multilayering. Using optical profiler, roughness and hybrid 3D surface topography parameters were estimated. Correlation between surface composition, morphology, roughness and biocompatibility results was done. It has been shown by us that surface with appropriate chemical composition and topography, after combined electrochemical anodic and cathodic surface treatment, supports osteoblast adhesion and proliferation. 3D topography measurements using optical profiler play a key role in the biomaterials surface analysis. ► Nanocrystalline Ti–6Zr–4Nb/Ca–P material was produced for hard tissue implant applications. ► Calcium-phosphate results in surface biofunctionalization. ► The biofunctionalized surface shows good in-vitro behavior.