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Application of carbon nanotubes to silicon nitride matrix reinforcements
Cs. Bal?zsi,F. Weber,Zs. Kover,Z. Shen,Z. Konya,Zs Kasztovszky,Z. Vertesy,L.P. Biro,I. Kiricsi,P. Arato 한국물리학회 2006 Current Applied Physics Vol.6 No.2
tiwall carbon nanotube (MWNT) reinforced silicon nitride composites. Morphological, structural, compositional investigations, aswell as mechanical characterization have been performed. The rst results show that carbon nanotubes have been preserved in com-posite structure during these two high-temperature processes. Carbon nanotubes have been found to have good adherence to thesilicon nitride grains as observed for both processing methods. Moreover, carbon nanotubes may serve as crystallization sitesand seeds for silicon nitride grain growth. Signicant dierences have been found between composites prepared by these two sin-obtained by spark plasma sintering. The conventional sintering resulted in partially densied composites with coarser grainstructure