| Title |
Fabrication and Mechanical Properties of Nanostructured Al2O3-MgSiO3-SiO2 Composites Synthesized by Pulsed Current Activated Combustion of Mechanically Activated Powder |
| Authors |
손인진(In Jin Shon); 강현수(Hyun Su Kang); 도정만(Jung Mann Doh); 윤진국(Jin Kook Yoon) |
| DOI |
https://doi.org/10.3365/KJMM.2011.49.7.565 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
compound; nanostructure; sintering; mechanical properties; pulsed current activated combustion |
| Abstract |
Nanopowders of MgO, Al2O3 and SiO2 were made by high-energy ball milling. The fast sintering of nanostructured Al2O3-MgSiO3-SiO2 composites was investigated from mechanically activated powders of MgO, Al2O3 and SiO2 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 Al2O3-MgSiO3-SiO2 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 Al2O3-MgSiO3-SiO2 composites were investigated. |