The Role of Nanodispersed Nitrides in the Sintering of Silicon Nitride Ceramics
authors Georgieva, M; Vissokov, G; Grancharov, I; Silva, RF; Oliveira, FJ
nationality International
author keywords silicon nitride ceramics; nanocomposites; nanopowders
abstract The synthesis of ceramics based on silicon nitride using nanopowders of TiN and Si(3)N(4) as additives was studied. The ceramic compositions were pressurelessly sintered under nitrogen atmosphere at different temperature (1550 degrees C, 1650 degrees C and 1750 degrees C) with a heating rate of 10 degrees C/min and a holding time of 2 h. The nanodispersed nitrides (NDN) were produced by electric-arc plasma synthesis and characterized. The ceramic composites obtained with nanoparticles of 1 wt% to 5wt% TiN and 20wt% Si(3)N(4) were characterized by scanning electron microscopy (SEM), atom force microscopy (AFM) and energy-dispersive spectrometry (EDX). The effect of the addition of nanodispersed powders on the mechanical properties and microstructure of Si(3)N(4) ceramics was investigated.
issn 1009-0630
year published 2010
volume 12
issue 1
beginning page 46
ending page 48
web of science category Physics, Fluids & Plasmas
subject category Physics
unique article identifier WOS:000274935800010
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