Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior
Rothammer B, Marian M, Neusser K, Bartz M, Böhm T, Krauß S, Schroeder S, Uhler M, Thiele S, Merle B, Kretzer JP, Wartzack S (2021)
Publication Language: English
Publication Type: Journal article, Online publication
Publication year: 2021
Journal
Book Volume: 13
Pages Range: 1 - 25
Journal Issue: 11
URI: https://www.archiv.mfk.tf.fau.de?file=pubmfk_60bb59ba4432e
Open Access Link: https://www.mdpi.com/2073-4360/13/11/1880
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.
Authors with CRIS profile
Benedict Rothammer
Chair of Engineering Design
Max Marian
Chair of Engineering Design
Kevin Neusser
Chair of Engineering Design
Marcel Bartz
Chair of Engineering Design
Sebastian Krauß
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)
Simon Thiele
Benoit Merle Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Sandro Wartzack Chair of Engineering Design
Benoit Merle Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Sandro Wartzack Chair of Engineering Design
Additional Organisation(s)
Involved external institutions
Universitätsklinikum Heidelberg
Germany (DE)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
Germany (DE)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
How to cite
APA:
Rothammer, B., Marian, M., Neusser, K., Bartz, M., Böhm, T., Krauß, S.,... Wartzack, S. (2021). Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior. Polymers, 13(11), 1 - 25. https://dx.doi.org/10.3390/polym13111880
MLA:
Rothammer, Benedict, et al. "Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior." Polymers 13.11 (2021): 1 - 25.
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