Synergistic effect of hybrid carbon nanotube and graphene nanoplatelets reinforcement on processing, microstructure, interfacial stress and mechanical properties of Al2O3 nanocomposites
| Autor: | Biswajyoti Mukherjee, Anup Kumar Keshri, M. Sribalaji, Tapas Laha, O.S. Asiq Rahman |
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| Rok vydání: | 2018 |
| Předmět: |
Toughness
Nanocomposite Materials science Graphene Process Chemistry and Technology Spark plasma sintering 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Fracture toughness law Spray drying Materials Chemistry Ceramics and Composites Composite material 0210 nano-technology |
| Zdroj: | Ceramics International. 44:2109-2122 |
| ISSN: | 0272-8842 |
| Popis: | Al2O3, Al2O3-1 wt% Carbon Nanotube (CNT) and Al2O3-1 wt% CNT-0.5 wt% Graphene Nanoplatelets (GNP) were consolidated by spark plasma sintering at a temperature of 1500 °C. Spray drying technique was used for uniformly distributing the CNTs and GNPs. Fracture toughness of Al2O3 pellet drastically increased to 168% on addition of CNTs, while substantial improvement of 250% was seen on the addition of both CNTs and GNPs. Interfacial shear stress for Al2O3-CNT-GNP was found to be 350–1100 MPa. Novel toughening mechanisms such as CNT yarning and CNT embedded graphene was found responsible for the drastic improvement in toughness. |
| Databáze: | OpenAIRE |
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