One step synthesis and densification of nanocrystalline TaSi2-Si3N4 composite from mechanically activated powders by high-frequency induction-heated combustion

Title
One step synthesis and densification of nanocrystalline TaSi2-Si3N4 composite from mechanically activated powders by high-frequency induction-heated combustion
Authors
박현국박정환윤진국이기태손인진
Keywords
High-frequency induction heated combustion; Composite materials; Sintering; Nanophase; Mechanical properties; TaSi2-Si3N4
Issue Date
2009-10
Publisher
Journal of electroceramics
Citation
VOL 23, NO 2-4, 542-547
Abstract
Dense nanocrystalline 4TaSi2–Si3N4 composite was synthesized by high-frequency induction-heated combustion synthesis (HFIHCS) method within 1 min in one step from mechanically activated powders of TaN and Si. Simultaneous combustion synthesis and densification were accomplished under the combined effects of an induced current and mechanical pressure. Highly dense 4TaSi2–Si3N4 composite with relative density of up to 99% was produced under simultaneous application of a 60 MPa pressure and the induced current. The average grain size and mechanical properties (hardness and fracture toughness) of the composite were investigated.
URI
http://pubs.kist.re.kr/handle/201004/36586
ISSN
1385-3449
Appears in Collections:
KIST Publication > Article
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