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Poster Presentation

Sputtered, micro structured freestanding FeMn foils as biodegradable material

Sunday (01.01.2040)
00:00 - 08:06
Part of:
Line-Up:
- Poster Presentation The European user access program nanoscience foundries and fine analysis (NFFA) 0 Dr.-Ing. Thomas F. Keller
- Poster Presentation Sarcoma osteogenic-like Saos-2 cells on the silica nanofibres coated with nanodiamond 1 Marie Steinerova
- Poster Presentation Sputtered, micro structured freestanding FeMn foils as biodegradable material 0 Till Jurgeleit
- Poster Presentation Exploring the effects of organic components on the degradation of magnesium in vitro under physiological conditions 1 Ph.D. Ruiqing Hou
- Poster Presentation Influence of laser treatment on the corrosion behavior of Mg-1Zn-1Ca and Mg-3Zn-0.3Ca alloys 1 Ph.D. Nuria Pulido González
- Poster Presentation PLA based CaCO3 composite fibers for textile scaffolds in hard tissue regeneration 1 Dr.-Ing. Claudia Hinüber
- Poster Presentation Functionalization of polymer fibers with heparan sulfate as a representative of the extracellular matrix 1 Inga Wille
- Poster Presentation Development and Characterization of Hybrid Hydrogel Based on Oxidized Alginate and Keratin for Tissue Engineering Applications 0 Supachai Reakasame
- Poster Presentation Nir Laser-responsive Folate-targeted Gold Nanorods As Efficient theranostic tool for Osteosarcoma Treatment 1 Ph.D. Nicol? Mauro
- Poster Presentation Mechanical properties of recent CAD/CAM polymer materials 1 Sebastian Spintzyk
- Poster Presentation Multilayers of Nanoparticles with Alginate, Chondroitin sulfate and Hyaluronic acid for graded implants 1 Steffen Sydow
- Poster Presentation Design of drug eluting ophthalmic lenses through a multi-layer approach 1 Dr. Ana Topete
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- Poster Presentation Investigating the compressibility of spray dried alumina-zirconia granules for use in orthopaedics - an easy to use and fast method 1 Dr. Ranko Adjiski
- Poster Presentation Biochemical modification of extruded protein nanofibers 1 Karsten Stapelfeldt
- Poster Presentation Microfibers and Nanoparticles with Controlled Dimensions of a Hyaluronic Acid Derivative 1 Ph.D. Calogero Fiorica
- Poster Presentation Modeling the Viscosity of Silicone Rubber During High-Speed Infrared Curing 1 Jan Stieghorst
- Poster Presentation Effect of the pH of bleaching H2O2 solutions in the enamel morphology, hardness and color 1 Dr. Ana Topete
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- Poster Presentation Adjusted material-cell interaction using engineered spider silk proteins 1 Vanessa Trossmann
- Poster Presentation Cellular interactions with extruded protein nanofibers 1 Naiana Suter
- Poster Presentation Antimicrobial efficacy of strontium and zinc glasses and glass ionomer cements against clinically relevant bacteria 0 Hawshan Mustafa
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- Poster Presentation Mechanical properties of biocompatible polymer-based resin for dental applications fabricated by stereolithography 1 Phan Hai-Binh Bui

Session P.2: Poster Session 2
Belongs to:
Topic P: Postersession


The most prominent candidates for biodegradable metals are magnesium and iron. The advantages of iron in comparison to magnesium are the higher strength and good X-ray visibility which is essential during the implementation of the implant. However in vivo studies have shown an insufficient degradation rate. Thus the task for iron based biodegradable material is either to accelerate the degradation rate or increase the strength which would allow the usage of thinner structures and as a consequence relativizes the low corrosion rate. In order to achieve this FeMn alloys were shown being a promising candidate material. Even the investigations of alternative fabrication methods are of great interest in order to tailor the material properties due to the variation of the microstructure.

In the present study magnetron sputtering in combination with lithography techniques was used in order to fabricate freestanding, micro structured FeMn foils. To adjust the microstructure, the foils were annealed under reducing atmosphere. The microstructure was investigated by SEM, STEM, EDX and XRD. Furthermore, uniaxial tensile tests were performed on behalf of the mechanical characterization. The in vitro corrosion rates were determined with weight loss immersion tests and electrochemical polarization measurements. Additionally, the magnetic properties were measured via VSM

The foils showed a fine grained structure and a tensile strength of 712 MPa which is approximately by the factor of two higher compared to the sputtered pure iron reference material. Due to the TWIP (twinning induced plasticity) effect even the ductility is improved while the corrosion rate shows comparable values. Since the annealed foils exist in the austenitic, and antiferromagnetic γ-phase, an additional advantage of the FeMn foils, is the low magnetic saturation polarization of 0.003 T compared to iron with 1.978 T. This enhances the MRI compatibility of the material.


 

Speaker:
Till Jurgeleit
Christian-Albrechts-University of Kiel
Additional Authors:
  • Dr. Christiane Zamponi
    Christian-Albrechts-Universität zu Kiel
  • Prof. Dr. Eckhard Quandt
    Christian-Albrechts-Universität zu Kiel