Development of an aluminum and vanadium-free titanium alloy based on technically pure titanium for use in osteosynthesis and implant technology

IGF 19708 N

Bild Forschungsprojekt
Period:  01.01.2018 - 30.06.2020
Partner:  TU Braunschweig, Institut für Werkstoffe, Prof. Dr. J. Rösler
Funder:  AiF
Research Group:  Corrosion

Abstract

 

 

Titanium and its alloys have been used in the field of osteosynthesis and implant technology for about 30 years. Titanium materials combine high strength with comparatively low stiffness, which minimizes the risk of implant failure (stress shielding effect). Because of the natural passive layer of titanium oxide, they are also biocompatible and show excellent corrosion resistance.

The titanium alloys most commonly used in medical technology are Ti Al6 V4 and Ti Al6 Nb7, which in addition to titanium contain aluminum and vanadium or niobium. If the thin oxide layer is damaged, harmful metal ions can be released into the human body and thus into the blood circulation.

Due to the negative effects of aluminum on the human organism and the cell toxic behavior of vanadium, a new aluminum and vanadium-free titanium alloy will be developed. The alloy contains only elements, which already exist in the human body or for which no negative effects are known. From numerical simulations, suitable compositions should first be identified, which are then produced on laboratory scale and characterized with respect to their mechanical properties. In addition, extensive studies on corrosion behavior are planned in order to understand how metal ions could be released and penetrate into the implant-surrounding tissue. Promising alloys will be produced on a larger scale, characterized and tested in real components. Finally, the alloys’ surface will be modified by plasma electrolytic oxidation process.

At the end of the project, a new titanium material will be available for the use in medical technology, which can be used in particular by small and medium-sized companies.

 

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Das IGF-Vorhaben Nr. IGF 19708 N der Forschungsvereinigung DECHEMA e.V., Theodor-Heuss-Allee 25, 60486 Frankfurt am Main wurde über die AiF im Rahmen des Programms zur Förderung der industriellen Gemeinschaftsforschung (IGF) vom Bundesministerium für Wirtschaft und Energie aufgrund eines Beschlusses des Deutschen Bundestages gefördert.

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