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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Andersen, Olaf
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024Porous Metals and Metallic Foams
- 2023A Bioinspired Orthopedic Biomaterial with Tunable Mechanical Properties Based on Sintered Titanium Fiberscitations
- 2023A Bioinspired Orthopedic Biomaterial with Tunable Mechanical Properties Based on Sintered Titanium Fiberscitations
- 2022Gas Analysis and Optimization of Debinding and Sintering Processes for Metallic Binder-Based AM* ; Gasanalyse und Optimierung von Entbinderungs- und Sinterprozessen für Metallische Binderbasierte Additive Fertigungcitations
- 2022Biodegradable open-porous scaffolds made of sintered magnesium W4 and WZ21 short fibres show biocompatibility in vitro and in long-term in vivo evaluationcitations
- 2022Gas Analysis and Optimization of Debinding and Sintering Processes for Metallic Binder-Based AM*citations
- 2022Gas Analysis and Optimization of Debinding and Sintering Processes for Metallic Binder-Based AM*citations
- 2022A Bioinspired Orthopedic Biomaterial with Tunable Mechanical Properties Based on Sintered Titanium Fiberscitations
- 2021Automated Filling of Dry Micron-Sized Particles into Micro Mold Pattern within Planar Substrates for the Fabrication of Powder-Based 3D Microstructurescitations
- 2018Strongly Orthotropic Open Cell Porous Metal Structures for Heat Transfer Applicationscitations
- 2018Powder metallurgically manufactured cellular metals from carat gold alloys for decorative applicationscitations
- 2016Experimental and Numerical Evaluation of the Mechanical Behavior of Strongly Anisotropic Light-Weight Metallic Fiber Structures under Static and Dynamic Compressive Loadingcitations
- 2015A New Adsorbent Composite Material Based on Metal Fiber Technology and Its Application in Adsorption Heat Exchangerscitations
- 2013On the mechanical properties of sintered metallic fibre structurescitations
- 2013In vitro and in vivo evaluation of biodegradable, open-porous scaffolds made of sintered magnesium W4 short fibrescitations
- 2013Highly Porous Magnesium Alloy Structures and Their Properties Regarding Degradable Implant Applicationcitations
- 2012Highly heat conductive open-porous aluminium fibre based parts for advanced heat transfer applicationscitations
- 2012On the thermal conductivity of sintered metallic fibre structurescitations
- 2011Metallic short fibers for liquid-phase oxidation reactionscitations
- 2010Heat transfer and fluid flow in sintered metallic fiber structurescitations
- 2009New multifunctional lightweight materials based on cellular metals - Manufacturing, properties and applicationscitations
- 2009Tailored magnetic fields in the melt extraction of metallic filamentscitations
- 2008Sintered metal fiber structures from aluminum based fibers-manufacturing and properties
- 2007Inno.zellmet - A concerted approach towards the application of non-foam type cellular metals
- 2006Iron based cellular structures - Status and prospectscitations
- 2005Advanced high temperature turbine seals materials and designs
- 2005Innovative catalysts for oxidative dehydrogenation in the gas phase - Metallic short fibers and coated glass fabricscitations
- 2004Innovative catalysts for oxidative dehydration reactions in the gas phase - Metallic short fibres | Innovative katalysatoren zur oxidativen dehydrierung in der gasphase - Metallische kurzfaserncitations
- 2003Effect of spark plasma sintering (SPS) on the microstructure and mechanical properties of randomly packed hollow sphere (RHS) cell wallcitations
- 2000Novel metallic hollow sphere structures
Places of action
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article
Biodegradable open-porous scaffolds made of sintered magnesium W4 and WZ21 short fibres show biocompatibility in vitro and in long-term in vivo evaluation
Abstract
389 ; 404 ; Open-porous scaffolds made of W4 and WZ21 fibres were evaluated to analyse their potential as an implant material. WZ21 scaffolds without any surface modification or coating, showed promising mechanical properties which were comparable to the W4 scaffolds tested in previous studies. Eudiometric testing results were dependent on the experimental setup, with corrosion rates differing by a factor of 3. Cytotoxicity testing of WZ21 showed sufficient cytocompatibility. The corrosion behavior of the WZ21 scaffolds in different cell culture media are indicating a selective dealloying of elements from the magnesium scaffold by different solutions. Long term in-vivo studies were using 24 W4 scaffolds and 12 WZ21 scaffolds, both implanted in rabbit femoral condyles. The condyles and important inner organs were explanted after 6, 12 and 24 weeks and analyzed. The in-vivo corrosion rate of the WZ21 scaffolds calculated by microCT-based volume loss was up to 49 times slower than the in-vitro corrosion rate based on weight loss. Intramembranous bone formation within the scaffolds of both alloys was revealed, however a low corrosion rate and formation of gas cavities at initial time points were also detected. No systemic or local toxicity could be observed. Investigations by μ-XRF did not reveal accumulation of yttrium in the neighboring tissue. In summary, the magnesium scaffold´s performance is biocompatible, but would benefit from a surface modification, such as a coating to obtain lower the initial corrosion rates, and hereby establish a promising open-porous implant material for load-bearing applications. ; 148