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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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Gneiger, Stefan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Dark field imaging of the in vitro corrosion of biodegradable magnesium screws
- 2024Novel Magnesium Nanocomposite for Wire-Arc Directed Energy Deposition
- 2024Novel Magnesium Nanocomposite for Wire-Arc Directed Energy Deposition
- 2024Investigations on the Forging Behavior of Mg–Ca–Al Alloys
- 2024Manufacturing and processing of sheets using a Mg–Al–Ca–Zn–Y alloy for automotive applicationscitations
- 2023Ultrasonic atomization of magnesium alloy AZ61 based on the TIG melting method
- 2023Applicability of a deformation dilatometer for short time creep experiments of magnesium alloyscitations
- 2023Investigations on forging of low-density Mg-Li alloys
- 2023Precipitation behaviour in AlMgZnCuAg crossover alloy with coarse and ultrafine grainscitations
- 2023Tolerance of Al–Mg–Si Wrought Alloys for High Fe Contents: The Role of Effective Sicitations
- 2023Processing of AZ91D Magnesium Alloy by Laser Powder Bed Fusioncitations
- 2022Investigations on a ternary Mg-Ca-Si wrought alloy extruded at moderate temperaturescitations
- 2022Active inserts, a plug and play solution for increasing mechanical properties and reducing porosity in LPDC-ed parts - Aktive Einsätze, eine Plug-and-Play-Lösung zur Verbesserung der mechanischen Eigenschaften und Verringerung der Porosität in LPDC-gefertigten Teilen
- 2020Mg-alloys for forging applications-A reviewcitations
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document
Dark field imaging of the in vitro corrosion of biodegradable magnesium screws
Abstract
Orthopedic magnesium implants offer a unique solution for the repair and internal fixation of bones since they are biodegradable, i.e., eventually absorbed by the body. In this contribution, we analyse screws from the magnesium alloy MX1 (1% Mn, < 0.5% Ca). The test sample is represented by an ISO M3 x 16 screw which was analysed before and after controlled corrosion in a flow cell. We use X-ray microcomputed tomography (XCT), dark-field and phase contrast XCT, and scanning electron microscopy (SEM) to analyse microstructural changes during degradation. While microcracks in corroded parts can only be visualized at very high XCT scanning resolutions or SEM imaging, DFC images show a clear indication of corroding regions. Since DFC delivers morphological information in the sub-pixel regime it is possible to quantify microcracks in relatively large samples whereas single microcracks are visible in SEM images but not in low-resolution attenuation contrast images, e.g. at a voxel size of 10 μm. X-ray dark-field imaging improves defect detection in corroded Mg samples without the necessity of small sample dimensions, hence providing a new approach to quantify degradation rates in corroding Mg implants in three dimensions.