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  4. Biocompatibility, mechanical properties and degradation of fe based alloys and composites processed by powder injection moulding
 
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2013
Conference Paper
Title

Biocompatibility, mechanical properties and degradation of fe based alloys and composites processed by powder injection moulding

Abstract
Metal Injection Moulding (MIM) is known as a viable process for series production of complex parts for biomedical applications. In this study, biodegradable iron based materials (Fe, Fe-0.6P, Fe-35Mn, Fe-ß-TCP) were prepared, processed by MIM and characterized towards biocompatibility, mechanical and degradation properties. Samples were sintered under different conditions to create a range of densities and microstructures. Cytotoxicity was tested according to ISO 10993-5. Using appropriate process parameters all materials proved non cytotoxic. Mechanical properties showed significant dependency on sintering conditions. The values recorded indicate potential usability of the materials for a range of orthopaedic implants. Corrosion behavior in vitro shows a strong dependency of the degradation rates on the medium used, and results of mechanical tests suggest significant degradation of mechanical properties. Despite the obvious need for further investigations, iron based a lloys and composites processed by PIM may be considered for future biodegradable implants in load bearing implant applications.
Author(s)
Imgrund, P.
Hein, S.
Reindl, A.
Grunwald, I.
Goncalves, P.
Mainwork
Euro PM2013 Congress & Exhibition. Vol. 3: Functional Materials, Lightweight and Porous Materials, Metal Matrix Composites, Metal Supported Membranes, Miniaturisation and Nanotechnology, PM Biomaterials, Sintered Steels  
Conference
International Powder Metallurgy Congress and Exhibition (Euro PM) 2013  
Language
English
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
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