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Evaluation of Mechanical and Electrical Performance of Aging Resistance ZTA Composites Reinforced with Graphene Oxide Consolidated by SPS.
Grigoriev, Sergey; Smirnov, Anton; Pinargote, Nestor Washington Solis; Yanushevich, Oleg; Kriheli, Natella; Kramar, Olga; Pristinskiy, Yuri; Peretyagin, Pavel.
Afiliación
  • Grigoriev S; Spark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology "STANKIN", Vadkovsky per. 1, Moscow 127055, Russia.
  • Smirnov A; Spark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology "STANKIN", Vadkovsky per. 1, Moscow 127055, Russia.
  • Pinargote NWS; Spark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology "STANKIN", Vadkovsky per. 1, Moscow 127055, Russia.
  • Yanushevich O; Scientific Department, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow 127473, Russia.
  • Kriheli N; Scientific Department, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow 127473, Russia.
  • Kramar O; Scientific Department, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow 127473, Russia.
  • Pristinskiy Y; Spark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology "STANKIN", Vadkovsky per. 1, Moscow 127055, Russia.
  • Peretyagin P; Spark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology "STANKIN", Vadkovsky per. 1, Moscow 127055, Russia.
Materials (Basel) ; 15(7)2022 Mar 25.
Article en En | MEDLINE | ID: mdl-35407750
This paper presents a study of Al2O3-ZrO2 (ZTA) nanocomposites with different contents of reduced graphene oxide (rGO). The influence of the rGO content on the physico-mechanical properties of the oxide composite was revealed. Graphene oxide was obtained using a modified Hummers method. Well-dispersed ZTA-GO nanopowders were produced using the colloidal processing method. Using spark plasma sintering technology (SPS), theoretically dense composites were obtained, which also reduced GO during SPS. The microstructure, phase composition, and physico-mechanical properties of the sintered composites were studied. The sintered ZTA composite with an in situ reduced graphene content of 0.28 wt.% after the characterization showed improved mechanical properties: bending strength was 876 ± 43 MPa, fracture toughness-6.8 ± 0.3 MPa·m1/2 and hardness-17.6 ± 0.3 GPa. Microstructure studies showed a uniform zirconia distribution in the ZTA ceramics. The study of the electrical conductivity of reduced graphene oxide-containing composites showed electrical conductivity above the percolation threshold with a small content of graphene oxide (0.28 wt.%). This electrical conductivity makes it possible to produce sintered ceramics by electrical discharge machining (EDM), which significantly reduces the cost of manufacturing complex-shaped products. Besides improved mechanical properties and EDM machinability, 0.28 wt.% rGO composites demonstrated high resistance to hydrothermal degradation.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Suiza