Mechanical properties and rapid consolidation of binderless niobium carbide
- Mechanical properties and rapid consolidation of binderless niobium carbide
- 김병량; 우기도; 윤진국; 도정만; 손인진
- Sintering; High-frequency induction-heating; Carbides; Hardness; Toughness; NbC
- Issue Date
- Journal of alloys and compounds
- VOL 481, NO 1-2, 573-576
- The rapid sintering of NbC hard materials in a short time was investigated with a focus on the manufacturing
potential of the high-frequency induction-heating sintering process. The advantage of this process
is that it allows for very quick densification to near theoretical density. A dense pure NbC hard material
with a relative density of up to 98% was produced within 2 min from heating sample by the simultaneous
application of a pressure of 80MPa and an induced current corresponding to 70% of the total output
powder capacity (15 kW). The finer the initial NbC powder size, the higher the density and the better
the mechanical properties. The fracture toughness and hardness values obtained were 7.0MPam1/2 and
2200 kg/mm2, respectively.
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