Properties of nanostructured tungsten carbide and their rapid consolidation by pulsed current activated sintering
- Properties of nanostructured tungsten carbide and their rapid consolidation by pulsed current activated sintering
- 손인진; 김병량; 도정만; 윤진국; 우기도
- Nanoscale science and low-D systems
- Issue Date
- Physica scripta
- VOL 2010, NO T139, 014043-1-014043-4
- Highly dense nanostructured WC with a relative density of up to 99% was obtained within
2 min by pulsed current activated sintering (PCAS) under a pressure of 80MPa. The relative
density of WC increased to 99% and the average grain size of WC decreased to 54 nm with
milling time. The hardness and fracture toughness of the dense WC produced by PCAS were
2620, 2489 and 2068 kg mm−2 and 8.5, 8.8 and 9.8MPa m1/2 with milling times of 10, 4
and 1 h, respectively.
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