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펄스 전류 활성 연소합성에 의한 나노구조의 2MoSi<sub>2</sub>-SIC제조 및 기계적 성질
손인진,김동기,정인균,도정만,윤진국,고인용,Shon, In-Jin,Kim, Dong-Ki,Jeong, In-Kyoon,Doh, Jung-Mann,Yoon, Jin-Kook,Ko, In-Yong 한국분말야금학회 2007 한국분말재료학회지 (KPMI) Vol.14 No.4
Dense nanostructured $2MoSi_{2}-SiC$ composites were synthesized by the pulsed current activated combustion synthesis (PCACS) method within 3 minutes in one step from mechanically activated powders of $Mo_{2}C$ and 5Si. Simultaneous combustion synthesis and densification were accomplished under the combined effects of a pulsed current and mechanical pressure. Highly dense $2MoSi_{2}-SiC$ with relative density of up to 96% was produced under simultaneous application of a 60 MPa pressure and the pulsed current. The average grain size of $MoSi_{2}$ and SiC were about 120 nm and 90 nm, respectively. The hardness and fracture toughness values obtained were 1350 $kg/mm^{2}$ and 4 $MPa{\cdot}m^{1/2}$, respectively.