Preparation,friction, wear,and fracture of the Si3N4-Ag-GNPs composites prepared by SPS |
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| Affiliation: | 1. Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia;2. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 36 Bratislava 45, Slovakia;3. Centre of Excellence for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia;1. IPMS, 3, Krzhizhanovsky str., 03680 Kiev, Ukraine;2. WUT, Wołoska 141, 02-507 Warszawa, Poland;3. IKTS, Winterbergstrasse 28, D-01277 Dresden, Germany;4. MRA Laboratories, Inc., 15 Print Works Drive, Adams, MA 01220, USA;1. Institute of Materials Research, Slovak Academy of Sciences, Košice, Slovak Republic;2. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Bratislava, Slovak Republic;3. Institute of Physics of Materials, Czech Academy of Sciences, Brno, Czech Republic;4. Donát Bánki Faculty of Mechanical and Safety Engineering, Óbuda University, Budapest, Hungary |
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| Abstract: | Silver and graphene nanoplatelets (Ag-GNPs) have been employed as reinforcements to prepare the self-lubricating silicon nitride matrix composites via 3D ball milling (Turbula) and spark plasma sintering. The prepared composites were characterized by scanning electron microscope with energy dispersive spectroscopy, Vickers hardness tester and reciprocating ball tribometer. Fracture surface morphology of the sintered composites indicated the potential reinforcement by the ductile silver phase. The mechanical property testing revealed that Si3N4 composites with Ag and GNPs incorporation exhibited lower hardness and slightly lower toughness compared with Si3N4 monolithic material. However, the coefficient of friction and wear in composites exhibited the lower values in 1 N friction force testing range. |
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| Keywords: | Ag GNPs Friction coefficient Wear |
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