Dresden 2006 – scientific programme
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DS: Dünne Schichten
DS 24: Poster presentation
DS 24.65: Poster
Tuesday, March 28, 2006, 15:00–17:30, P2
Chemical Behavior and Corrosion Resistance of Medical Grade Titanium after Surface Modification by Means of Ion Implantation — •Frank Schrempel1, Gerhard Hildebrand2, Marion Frant2, Klaus Liefeith2, and Werner Wesch1 — 1Institut für Festkörperphysik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, D-07743 Jena, Germany — 2Institut für Bioprozess- und Analysenmesstechnik, Rosenhof, D-37308, Heilbad Heiligenstadt, Germany
This work presents data on topographical structure, chemical surface composition and physicochemical properties of medical grade titanium after implantation of 30 keV Na-, Ca- and P-ions with fluences in the order of 1017 cm−2. Atomic force microscopy was used for surface analysis. The chemical composition was investigated using Rutherford backscattering spectrometry. Physicochemical investigations were carried out using contact angle and zetapotential measurements. The corrosion resistance was examined in simulated body fluid using cyclic voltametry. Whereas the depth distribution of P-atoms agrees with calculations, the concentration of Na- and Ca-atoms in the maximum of the depth distribution is significantly lower and the distribution extends to higher depths compared to the predictions. This finding is associated with a strong incorporation of oxygen. According to topographical and chemical changes different contact angles as well as zetapotentials have been detected compared to pure titanium. Electrochemical examinations indicate that the implantation has no negative influence on the corrosion resistance. The results show that ion implantation with certain ions can be used to design tailor made titanium surfaces.