Fabrication and Mechanical Properties of Nanostructured Al2O3-MgSiO3-SiO2 Composites Synthesized by Pulsed Current Activated Combustion of Mechanically Activated Powder

Title
Fabrication and Mechanical Properties of Nanostructured Al2O3-MgSiO3-SiO2 Composites Synthesized by Pulsed Current Activated Combustion of Mechanically Activated Powder
Authors
손인진강현수도정만윤진국
Keywords
Compound; Nanostructure; Sintering; Mechanical properties; Pulsed current activated combustion
Issue Date
2011-07
Publisher
대한금속 . 재료학회지; Journal of the Korean Institute of Metals and Materials
Citation
VOL 49, NO 7, 565-569
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.
URI
http://pubs.kist.re.kr/handle/201004/40040
ISSN
1738-8228
Appears in Collections:
KIST Publication > Article
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