Mechanical properties and rapid consolidation of binderless niobium carbide

Title
Mechanical properties and rapid consolidation of binderless niobium carbide
Authors
김병량우기도윤진국도정만손인진
Keywords
Sintering; High-frequency induction-heating; Carbides; Hardness; Toughness; NbC
Issue Date
2009-07
Publisher
Journal of alloys and compounds
Citation
VOL 481, NO 1-2, 573-576
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/35438
ISSN
0925-8388
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KIST Publication > Article
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