Preparation and properties of the nanocrystalline Ti-6Zr-4Nb alloy with Ca-P coating as a biomaterial for hard tissue implant applications

Grzegorz Adamek 1Jaroslaw Jakubowicz 2

1. Poznan University of Technology, Institute of Materials Science and Engineering, Pl. M. Skłodowskiej-Curie 5, Poznań 60-965, Poland
2. Poznań Technical University, pl. Marii Skłodowskiej-Curie 5, Poznań 60-965, Poland

Abstract

Formation of the Ti-6Zr-4Nb porous nanocrystalline alloy with Ca-P coating was described. The alloy was prepared by mechanical alloying followed by pressing and sintering. The porous bioactive surface was produced in two steps electrochemical treatment:  anodic oxidation in 1M H3PO4 + 2% HF electrolyte at 10V for 30min and subsequent cathodic Ca-P layer deposition at -5V for 1h, using a solution mixture of Ca(NO3)2 + (NH4)2HPO4 + HCl. The microstructure and morphology of the biofunctionalized surface was studied by TEM, XRD, SEM, and optical profiler. The corrosion potentiodynamic tests were performed in Ringer’s solution. The corrosion current density does not significantly change after surface modification, indicating good corrosion resistance of the biofunctionalized surfaces. Biocompatibility was investigated by in vitro tests using normal human osteoblasts (NHOst) which showed good cells behavior. The nanocrystalline Ti-6Zr-4Nb alloy with modified surface is a possible candidate for hard tissue implant application.

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Presentation: Poster at Nano-Biotechnologia PL, by Grzegorz Adamek
See On-line Journal of Nano-Biotechnologia PL

Submitted: 2012-06-29 19:22
Revised:   2012-06-29 19:22
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