Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties
Diamond-like carbon (DLC) coatings have the potential to reduce implant wear and thus to contribute to avoiding premature failure and increase service life of total knee replacements (TKAs). This two-part study addresses the development of such coatings for ultrahigh molecular weight polyethylene (U...
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doaj-f605dc9fde8f43c895a34a4f514c5dc72021-06-30T23:58:51ZengMDPI AGPolymers2073-43602021-06-01131952195210.3390/polym13121952Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical PropertiesBenedict Rothammer0Kevin Neusser1Max Marian2Marcel Bartz3Sebastian Krauß4Thomas Böhm5Simon Thiele6Benoit Merle7Rainer Detsch8Sandro Wartzack9Engineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyEngineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyEngineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyEngineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyMaterials Science & Engineering, Institute I, Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Cauerstr. 3, 91058 Erlangen, GermanyForschungszentrum Jülich GmbH, Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy, Cauerstr. 1, 91058 Erlangen, GermanyForschungszentrum Jülich GmbH, Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy, Cauerstr. 1, 91058 Erlangen, GermanyMaterials Science & Engineering, Institute I, Interdisciplinary Center for Nanostructured Films (IZNF), Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Cauerstr. 3, 91058 Erlangen, GermanyDepartment of Materials Science and Engineering, Institute of Biomaterials, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Cauerstr. 6, 91058 Erlangen, GermanyEngineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyDiamond-like carbon (DLC) coatings have the potential to reduce implant wear and thus to contribute to avoiding premature failure and increase service life of total knee replacements (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 a detailed characterization of the tribological behavior is the subject of part II, part I focusses on the deposition of pure (a-C:H) and tungsten-doped hydrogen-containing amorphous carbon coatings (a-C:H:W) and the detailed characterization of their chemical, cytological, mechanical and adhesion behavior. The coatings are fabricated by physical vapor deposition (PVD) and display typical DLC morphology and composition, as verified by focused ion beam scanning electron microscopy and Raman spectroscopy. Their roughness is higher than that of the plain substrates. Initial screening with contact angle and surface tension as well as in vitro testing by indirect and direct application indicate favorable cytocompatibility. The DLC coatings feature excellent mechanical properties with a substantial enhancement of indentation hardness and elastic modulus ratios. The adhesion of the coatings as determined in modified scratch tests can be considered as sufficient for the use in TKAs.https://www.mdpi.com/2073-4360/13/12/1952DLC coatingbiomedical applicationsbiotribologyUHMWPECoCrTi64 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Benedict Rothammer Kevin Neusser Max Marian Marcel Bartz Sebastian Krauß Thomas Böhm Simon Thiele Benoit Merle Rainer Detsch Sandro Wartzack |
spellingShingle |
Benedict Rothammer Kevin Neusser Max Marian Marcel Bartz Sebastian Krauß Thomas Böhm Simon Thiele Benoit Merle Rainer Detsch Sandro Wartzack Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties Polymers DLC coating biomedical applications biotribology UHMWPE CoCr Ti64 |
author_facet |
Benedict Rothammer Kevin Neusser Max Marian Marcel Bartz Sebastian Krauß Thomas Böhm Simon Thiele Benoit Merle Rainer Detsch Sandro Wartzack |
author_sort |
Benedict Rothammer |
title |
Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties |
title_short |
Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties |
title_full |
Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties |
title_fullStr |
Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties |
title_full_unstemmed |
Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties |
title_sort |
amorphous carbon coatings for total knee replacements—part i: deposition, cytocompatibility, chemical and mechanical properties |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2021-06-01 |
description |
Diamond-like carbon (DLC) coatings have the potential to reduce implant wear and thus to contribute to avoiding premature failure and increase service life of total knee replacements (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 a detailed characterization of the tribological behavior is the subject of part II, part I focusses on the deposition of pure (a-C:H) and tungsten-doped hydrogen-containing amorphous carbon coatings (a-C:H:W) and the detailed characterization of their chemical, cytological, mechanical and adhesion behavior. The coatings are fabricated by physical vapor deposition (PVD) and display typical DLC morphology and composition, as verified by focused ion beam scanning electron microscopy and Raman spectroscopy. Their roughness is higher than that of the plain substrates. Initial screening with contact angle and surface tension as well as in vitro testing by indirect and direct application indicate favorable cytocompatibility. The DLC coatings feature excellent mechanical properties with a substantial enhancement of indentation hardness and elastic modulus ratios. The adhesion of the coatings as determined in modified scratch tests can be considered as sufficient for the use in TKAs. |
topic |
DLC coating biomedical applications biotribology UHMWPE CoCr Ti64 |
url |
https://www.mdpi.com/2073-4360/13/12/1952 |
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