기계적 활성화된 분말로부터 펄스전류활성 연소합성에 의한 나노구조 Al_2O_3-MgSiO_3-SiO_2복합재료 제조 및 기계적 특성

• Published in: 대한금속·재료학회지, 49(7) pp. 565 - 569
• Main Authors: 손인진, 강현수, 도정만, 윤진국
• Format: Journal Article
• Language: Korean
• Published: 대한금속·재료학회 01.07.2011
• Subjects: 재료공학
• ISSN: 1738-8228; 2288-8241

Nanopowders of MgO, Al_2O_3 and SiO_2 were made by high-energy ball milling. The fast sintering of nanostructured Al_2O_3-MgSiO_3-SiO_2 composites was investigated from mechanically activated powders of MgO, Al_2O_3 and SiO_2 by a pulsed-current activated sintering process. Nanocrystalline materials have received much attention as advanced engineering materials with improved physical and mechanical properties; in particular greater strength, hardness, excellent ductility and toughness. Highly dense nanostructured Al_2O_3-MgSiO_3-SiO_2 composites were produced with simultaneous application of 80 MPa and pulsed output current of 2800A within 2 minutes. The sintering behavior, grain size and mechanical properties of Al_2O_3-MgSiO_3-SiO_2 composites were investigated. KCI Citation Count: 0