고주파유도가열 연소합성에 의한 치밀한 WSi2-20vol.%SiC 복합재료 제조 및 기계적 특성
Fabrication and Mechanical Properties of Dense WSi2-20vol.%SiC Composite by High-Frequency Induction-Heated Combustion Synthesis
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Abstract
Dense WSi2-20vol.%SiC composite was synthesized by high-frequency induction-heated combustion synthesis(HFIHCS) method within 2 minutes in one step from elemental powder mixture of W, Si and C. Simultaneous combustion synthesis and densification were accomplished under the combined effects of an induced current and mechanical pressure. Highly dense WSi2-20vol.%SiC with relative density of up to 97% was produced under simultaneous application of 60MPa pressure and the induced current. The average grain size of WSi2 was about 5.2㎛. The hardness and fracture toughness values obtained were 1700㎏/㎟ and 4.4㎫·m1/2, respectively.
참고문헌 (1)
- "Intermetallics", pp.115~ (1995), VCH Publishers