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MM: Fachverband Metall- und Materialphysik
MM 56: Biomaterials
MM 56.1: Vortrag
Donnerstag, 29. März 2012, 15:45–16:00, H 0106
Performance of biodegradable austenitic Fe-Mn-C-Pd alloys for temporary medical applications — •Michael Schinhammer1, Isabel Gerber2, Anja C. Hänzi1, Jörg F. Löffler1, and Peter J. Uggowitzer1 — 1Laboratory of Metal Physics and Technology, ETH Zurich, Switzerland — 2Laboraratory for Biologically Oriented Materials, ETH Zurich, Switzerland
Biodegradable metals offer great potential for the use as temporary implant material in vascular intervention and osteosynthesis. They may overcome some of the restrictions of permanent devices, such as prolonged physical irritation and chronic inflammation. Iron and its alloys are considered promising candidates for such applications. This study focuses on the performance of a biodegradable austenitic Fe-Mn-C-Pd alloy regarding its mechanical properties and in vitro cytocompatibility. The alloys developed feature high ductility values at moderate strength levels and a pronounced hardening, which makes the alloys especially suitable for stent applications. By means of thermo-mechanical treatments the properties can be adjusted over a wide range. In vitro cell testing indicates good cytocompatibility of the eluates, even with increasing eluate concentrations. In summary the property profile of the newly developed alloys appears promising for the use as degradable medical implant material.