Rapid sintering of nanostructured WC-graphene composites and their mechanical properties
- Rapid sintering of nanostructured WC-graphene composites and their mechanical properties
- 윤진국; 김성은; 손인진
- Nano-materials; Sintering; Hardness; Fracture toughness; Graphene
- Issue Date
- Journal of nanoscience and nanotechnology
- VOL 20, NO 7-4439
- The current concern about WC focuses on its low fracture toughness below the ductile-brittle transition temperature despite its many attractive properties. To improve its mechanical properties, the approach generally utilized has been the addition of a second phase to form composites and to make nanostructured materials. In this paper, graphene was evaluated as the reinforcing agent in WC ceramics using a novel sintering method (high-frequency induction heated sintering method). Highly dense nanostructured WC and WC-graphene composites were obtained within two min at 1550 degrees C. The effect of graphene on the grain size and the mechanical properties (hardness and fracture toughness) of WC-graphene composites was evaluated.
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