| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Moosmann, Julian
Helmholtz-Zentrum Hereon
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Unveiling thermo‐fluid dynamic phenomena in laser beam welding
- 2024Exploring spatial beam shaping in laser powder bed fusion:High-fidelity simulation and in-situ monitoringcitations
- 2024Improvement of corrosion resistance of PEO coated dissimilar Ti/Mg0.6Ca couplecitations
- 2024Improvement of corrosion resistance of PEO coated dissimilar Ti/Mg0.6Ca couplecitations
- 2024Towards an Understanding of the Challenges in Laser Beam Welding of Copper - Observation of the Laser-Matter Interaction Zone in Laser Beam Welding of Copper and Steel Using in Situ Synchrotron X-Ray Imagingcitations
- 2024Pull‐Out Testing of Electrochemically Etched NiTi Shape Memory Alloy Wires in Shape Memory Alloy Hybrid Composites
- 2024Pull‐Out Testing of Electrochemically Etched NiTi Shape Memory Alloy Wires in Shape Memory Alloy Hybrid Composites
- 2024Challenges in non-destructive X-ray CT testing of riveted joints in the automotive industrycitations
- 2023Interface failure analysis of embedded NiTi SMA wires using in situ high-resolution X-ray synchrotron tomographycitations
- 2023Analysis on the influence of vapor capillary aspect ratio on pore formation in laser beam welding of aluminumcitations
- 2023Towards an Understanding of the Challenges in Laser Beam Welding of Copper – Observation of the Laser-Matter Interaction Zone in Laser Beam Welding of Copper and Steel Using in Situ Synchrotron X-Ray Imagingcitations
- 2022Assessing the long-term in vivo degradation behavior of magnesium alloys - a high resolution synchrotron radiation micro computed tomography studycitations
- 2022Pore Formation and Melt Pool Analysis of Laser Welded Al-Cu Joints using Synchrotron Radiationcitations
- 2022Pore formation and melt pool analysis of laser welded Al-Cu joints using synchrotron radiationcitations
- 2021Assessing the microstructure and in vitro degradation behavior of Mg-xGd screw implants using µCTcitations
- 2021Assessing the microstructure and in vitro degradation behavior of Mg-xGd screw implants using µCTcitations
- 2021Multimodal ex vivo methods reveal that Gd-rich corrosion byproducts remain at the implant site of biodegradable Mg-Gd screwscitations
- 2019A load frame for in situ tomography at PETRA IIIcitations
- 2019A load frame for in situ tomography at PETRA IIIcitations
- 2018Visualization of Implant Failure by Synchrotron Tomographycitations
Places of action
| Organizations | Location | People |
|---|
article
Assessing the microstructure and in vitro degradation behavior of Mg-xGd screw implants using µCT
Abstract
Biodegradable implants are taking an increasingly important role in the area of orthopedic implants with the aim to replace permanent implants for temporary bone healing applications. During the implant preparation process, the material's surface and microstructure are being changed by stresses induced by machining. Hence degradable metal implants need to be fully characterized in terms of the influence of machining on the resulting microstructure and corrosion performance.In this study, micro-computed tomography (µCT) is used for the quantification of the degradation rate of biodegradable implants. To our best knowledge, for the first time quantitative measures are introduced to describe the degradation homogeneity in 3D. This information enables a prediction in terms of implant stability during the degradation in the body.Two magnesium gadolinium alloys, Mg-5Gd and Mg-10Gd (all alloy compositions are given in weight% unless otherwise stated), in the shape of M2 headless screws have been investigated for their microstructure and their degradation performance up to 56 days. During the microstructure investigations particular attention was paid to the localized deformation of the alloys, due to the machining process. In vitro immersion testing was performed to assess the degradation performance quantified by subsequent weight loss and volume loss (using µCT) measurements.Although differences were observed in the degree of screw's near surface microstructure being influenced from machining, the degradation rates of both materials appeared to be suitable for application in orthopedic implants. From the degradation homogeneity point of view no obvious contrast was detected between both alloys. However, the higher degradation depth ratios between the crests and roots of Mg-5Gd ratios may indicated a less homogeneous degradation of the screws of these alloys on contract to the ones made of Mg-10Gd alloys. Due to its lower degradation rates, its more homogeneous microstructure, its weaker texture and better degradation performance extruded Mg-10Gd emerged more suitable as implant material than Mg-5Gd.