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http://dx.doi.org/10.4150/KPMI.2005.12.1.017

Fabrication and Mechanical Properties of Dense WSi2-20vol.%SiC Composite by High-Frequency Induction-Heated Combustion Synthesis  

Oh, Dong-Young (Department of Advanced Materials Engineering, Research Center of Industrial Technology, Chonbuk National University)
Kim, Hwan-Cheol (Department of Advanced Materials Engineering, Research Center of Industrial Technology, Chonbuk National University)
Lee, Sang-Kwon (Eltek. Ltd)
Shon, In-Jin (Department of Advanced Materials Engineering, Research Center of Industrial Technology, Chonbuk National University)
Publication Information
Journal of Powder Materials / v.12, no.1, 2005 , pp. 17-23 More about this Journal
Abstract
Dense $WSi_2$-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 $WSi_2$-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 $WSi_2$ was about $5.2{\mu}m$. The hardness and fracture toughness values obtained were 1700kg/$mm^2$ and $4.4MPa{\cdot}m^{1/2}$, respectively.
Keywords
High-frequency induction heated combustion; Tungsten Silicides; Combustion Synthesis; Hardness; Fracture Toughness;
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