Molybdenum silicide has gained interest for high temperature structural applications. However, poor fracture toughness at room temperatures and low creep resistance at elevated temperatures have hindered its practical applications. This study uses a novel powder metallurgical approach applied to uniformly mixed molybdenum silicidebased composites with silicon carbide. The degree of powder mixing with different ball milling time is also demonstrated by Voronoi diagrams. Core-shell composite powder with Mo nanoparticles as the shell and β-SiC as the core is prepared via chemical vapor transport. Using this prepared core-shell composite powder, the molybdenum silicide-based composites with uniformly dispersed β-SiC are fabricated using pressureless sintering. The relative density of the specimens sintered at 1500oC for 10 h is 97.1%, which is similar to pressure sintering owing to improved sinterability using Mo nanoparticles.

Abstract
 1. 서 론
 2. 실험 방법
 3. 결과 및 고찰
 4. 결 론
 References

• 최원준(한양대학교 신소재공학과) | Won June Choi (Department of Materials Science and Engineering, Hanyang University)
• 박천웅(한양대학교 신소재공학과) | Chun Woong Park (Department of Materials Science and Engineering, Hanyang University)
• 김영도(한양대학교 신소재공학과) | Young Do Kim (Department of Materials Science and Engineering, Hanyang University)
• 변종민(서울과학기술대학교 신소재공학과) | Jong Min Byun (Department of Materials Science and Engineering, Seoul National University of Science and Technology) Corresponding Author