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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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Rothammer, Benedict
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2025Ti3C2Tx‐UHMWPE Nanocomposites—Towards an Enhanced Wear‐Resistance of Biomedical Implantscitations
- 2023Experimental study on the tribological behavior of ceramic disks for application in mixer taps under different lubrication conditions
- 2023Wear Mechanism of Superhard Tetrahedral Amorphous Carbon (ta‐C) Coatings for Biomedical Applicationscitations
- 2023Combining multi-scale surface texturing and DLC coatings for improved tribological performance of 3D printed polymerscitations
- 2022Design of Amorphous Carbon Coatings Using Gaussian Processes and Advanced Data Visualizationcitations
- 2021Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behaviorcitations
- 2021Amorphous carbon coatings for total knee replacements—part i: Deposition, cytocompatibility, chemical and mechanical propertiescitations
- 2020Lubricant free forming with tailored tribological conditions
Places of action
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article
Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior
Abstract
Diamond-like carbon coatings may decrease implant wear, therefore, they are helping to reduce aseptic loosening and increase service life of total knee arthroplasties (TKAs). This two-part study addresses the development of such coatings for ultrahigh molecular weight polyethylene (UHMWPE) tibial inlays as well as cobalt-chromium-molybdenum (CoCr) and titanium (Ti64) alloy femoral components. While the deposition of a pure (a-C:H) and tungsten-doped hydrogen-containing amorphous carbon coating (a-C:H:W) as well as the detailed characterization of mechanical and adhesion properties were the subject of Part I, the tribological behavior is studied in Part II. Pin-on-disk tests are performed under artificial synovial fluid lubrication. Numerical elastohydrodynamic lubrication modeling is used to show the representability of contact conditions for TKAs and to assess the influence of coatings on lubrication conditions. The wear behavior is characterized by means of light and laser scanning microscopy, Raman spectroscopy, scanning electron microscopy and particle analyses. Although the coating leads to an increase in friction due to the considerably higher roughness, especially the UHMWPE wear is significantly reduced up to a factor of 49% (CoCr) and 77% (Ti64). Thereby, the coating shows continuous wear and no sudden failure or spallation of larger wear particles. This demonstrated the great potential of amorphous carbon coatings for knee replacements.