Frictional and mechanical behaviour of graphene/UHMWPE composite coatings
| Autor: | Alejandro Ansón-Casaos, José Antonio Puértolas, A. Chih |
|---|---|
| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Commission, Gobierno de Aragón |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Composite number 02 engineering and technology engineering.material law.invention chemistry.chemical_compound 0203 mechanical engineering Coating Coatings law Composite material Elastic modulus Graphene Mechanical Engineering Biomaterial Surfaces and Interfaces Friction coefficient Polyethylene Tribology 021001 nanoscience & nanotechnology Surfaces Coatings and Films 020303 mechanical engineering & transports chemistry Mechanics of Materials engineering 0210 nano-technology Tribometer |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0301-679X |
| DOI: | 10.1016/j.triboint.2017.07.027 |
| Popis: | © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ Bulk-modified ultra-high molecular weight polyethylene (UHMWPE) is a biomaterial currently used for joint replacements. As an alternative, we assess the frictional behaviour of coatings based on graphene/UHMWPE composites and sprayed graphene, which maintain the high performance of the UHMWPE matrix. Composite coatings were prepared with 0–4.6 wt% of graphene nanoplatelets (GNP) and 1–2 layered graphene (2LG). Mechanical properties of the coatings were measured by nanoidentation and friction coefficients were determined with a ball-on-disk tribometer. The results indicate that GNP present better tribological behaviour than 2LG. Spray-coated GNP shows the lowest friction, 40% less than UHMWPE, although with low adhesion. An increase of 10% in elastic modulus and 30% in hardness was measured for composite coatings with 2–5 wt% graphene. Special thanks are directed to the Analysis Service of Instituto de Carboquímica, ICB-CSIC, in particular to M.D. Domínguez, N. Fernández and I. Fernández. This work has been funde(2016–79282-d by MINECO and European Regional Development Fund C5-1ENE -R), and Government of Aragon and European Social Fund (DGA-ESF-T66 “Grupo Consolidado”). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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