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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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Rosemann, Paul
Leipzig University of Applied Sciences
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2022Microstructure‐dependent crevice corrosion damage of implant materials <scp>CoCr28Mo6</scp>, <scp>TiAl6V4</scp> and <scp>REX</scp> 734 under severe inflammatory conditionscitations
- 2022Material-property correlations for a high-alloy special steelcitations
- 2021Application limits and sensitisation behaviour of the manganese‐ and nitrogen‐alloyed austenitic stainless steel P2000 (X13CrMnMoN18‐14‐3)citations
- 2020Sensitization behaviour of the nitrogen alloyed austenitic stainless steel X8CrMnMoN18-19-2citations
- 2020Microstructure and surface investigations of TiAl6V4 and CoCr28Mo6 orthopaedic femoral stemscitations
- 2020Quantitative evaluation of global and local chromium contents with the EPR test on ferritic and martensitic stainless steelscitations
- 2020Improvement of the martensitic stainless steel X46Cr13 by Q&P heat treatmentcitations
- 2020KorroPad testing - applications from industry and researchcitations
- 2019Detection of sensitisation on aged lean duplex stainless steel with different electrochemical methodscitations
- 2019Correlative Microscopy – Color Etching vs. Electron Backscatter Diffraction: Application Potenials and Limitationscitations
- 2018Reversed austenite for enhancing ductility of martensitic stainless steelcitations
- 2018Age-hardening behaviour, microstructure and corrosion resistance of the copper alloyed stainless steel 1.4542citations
- 2018Age-hardening behaviour, microstructure and corrosion resistance of the copper alloyed stainless steel 1.4542
- 2018Visualization of material-related susceptibility to pitting corrosion with the “KorroPad” indicator test
- 2018Precipitation behavior and corrosion resistance of nickel-free, high-nitrogen austenitic stainless steels
- 2018Heat treatment and corrosion resistance of cutlery
- 2018Influence of the post-weld surface treatment on the corrosion resistance of the duplex stainless steel 1.4062
- 2018How to Detect Sensitivity on Aged Lean-Duplex Stainless Steel With Electrochemical Methods
- 2018SD effect in martensitic stainless steel under Q&P heat treatment condition
- 2018Influence of austenitizing and tempering on the corrosion behavior and sensitization of martensitic stainless steel X50CrMoV15citations
- 2017Reversed austenite for enhancing ductility of martensitic stainless steelcitations
- 2017Influence of the post-weld surface treatment on the corrosion resistance of the duplex stainless steel 1.4062citations
- 2017Influence of the post-weld surface treatment on the corrosion resistance of duplex stainless steel 1.4062
- 2016Influence of nitrogen on the corrosion resistance of martensitic stainless steelscitations
- 2015Influence of solution annealing temperature and cooling medium on microstructure, hardness and corrosion resistance of martensitic stainless steel X46Cr13citations
- 2014Examination of the influence of heat treatment on the corrosion resistance of martensitic stainless steelscitations
- 2013Influence of microstructure and surface treatment on the corrosion resistance of martensitic stainless steels 1.4116, 1.4034, and 1.4021citations
Places of action
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article
Microstructure‐dependent crevice corrosion damage of implant materials <scp>CoCr28Mo6</scp>, <scp>TiAl6V4</scp> and <scp>REX</scp> 734 under severe inflammatory conditions
Abstract
<jats:title>Abstract</jats:title><jats:p>Fretting corrosion is associated with increased risk of premature implant failure. In this complex in vivo corrosion system, the contribution of static crevice corrosion of the joined metal alloys is still unknown. The aim of this study was to develop a methodology for testing crevice corrosion behavior that simulates the physiological conditions of modular taper junctions and to identify critical factors on corrosion susceptibility. Samples of medical grade CoCr28Mo6 cast and wrought alloy, TiAl6V4 wrought alloy and REX 734 stainless steel were prepared metallographically and the microstructure was investigated using scanning electron microscopy (SEM). Crevice formers that mimic typical geometries of taper junctions were developed. Crevice corrosion immersion tests were performed in different physiological fluids (bovine serum or phosphate buffered saline with additives of 30 mM H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> at pH = 1) for 4 weeks at 37°C. SEM with energy dispersive X‐ray spectroscopy as well as focused ion beam were used to characterize the surface morphology, investigate present damages and identify the chemical composition of residues. Macroscopic inspection showed increased crevice corrosion susceptibility of TiAl6V4 and REX 734 under severe simulated inflammatory conditions. CoCr28Mo6 cast alloy exhibited degraded areas next to Cr‐ and Mo‐rich precipitations that were located within the opposed crevices. The results indicate that aggressive electrolyte composition and crevice heights of 50–500 μm are critical influencing factors on crevice corrosion of biomedical alloys. Furthermore, manufacturing‐related microstructure of common implant alloys determines the deterioration of corrosion resistance. The developed method should be used to enhance the corrosion resistance of common implant biomaterials by an adapted microstructure.</jats:p>