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Vol.49, No.7, 565 ~ 570, 2011
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| Title |
| Fabrication and Mechanical Properties of Nanostructured Al2O3-MgSiO3-SiO2 Composites Synthesized by Pulsed Current Activated Combustion of Mechanically Activated Powder |
| 손인진 In Jin Shon , 강현수 Hyun Su Kang , 도정만 Jung Mann Doh , 윤진국 Jin Kook Yoon |
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| 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. |
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| Key Words |
| compound, nanostructure, sintering, mechanical properties, pulsed current activated combustion |
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