Mechanical properties and rapid consolidation of binderless nanostructured tantalum carbide
- Mechanical properties and rapid consolidation of binderless nanostructured tantalum carbide
- 김병량; 우기도; 도정만; 윤진국; 손인진
- Sintering; Nanocomposites; Hardness; Toughness
- Issue Date
- Ceramics international
- VOL 35, NO 8, 3395-3400
- The rapid sintering of nanostructured TaC hard material was investigated with a focus on the manufacturing potential of high-frequency induction heated sintering process. The advantage of this process is that it allows very quick densification to near theoretical density and prohibition of grain growth in nanostructured materials. A dense pure TaC hard material with a relative density of up to 96% was produced with simultaneous application of 80 MPa pressure and induced current within 3 min. The finer the initial TaC powder size, the higher the density and the better mechanical properties. The fracture toughness and hardness values obtained from 10 h milled powder were 5.1 ± 0.3 MPa m1/2 and 22 GPa, respectively, under 80 MPa pressure and 80% output of total power capacity (15 kW).
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