Published February 2010 | Version v1
Journal article Metadata-only

The Role of Nanodispersed Nitrides in the Sintering of Silicon Nitride Ceramics

Creators

  • 1. Department of Technology of Inorganic Substances, University of Chemical Technology and Metallurgy, 8, St. Kliment Ohridski Blvd., 1756 Sofia (Bulgaria)
  • 2. Institute of Catalysis, Bulgarian Academy of Sciences, Sofia 1113 (Bulgaria)
  • 3. Ceramics and Glass Eng. Department, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)

Description

The synthesis of ceramics based on silicon nitride using nanopowders of TiN and Si3N4 as additives was studied. The ceramic compositions were pressurelessly sintered under nitrogen atmosphere at different temperatures (1550 deg. C, 1650 deg. C and 1750 deg. C) with a heating rate of 10 deg. 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 5 wt% TiN and 20 wt% Si3N4 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 Si3N4 ceramics was investigated.

Availability note (English)

Available from http://dx.doi.org/10.1088/1009-0630/12/1/10

Additional details

Identifiers

DOI
10.1088/1009-0630/12/1/10;

Publishing Information

Journal Title
Plasma Science and Technology
Journal Volume
12
Journal Issue
1
Journal Page Range
p. 46-48
ISSN
1009-0630

INIS

Country of Publication
China
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41078971
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ATOMIC FORCE MICROSCOPY; CERAMICS; ELECTRIC ARCS; MECHANICAL PROPERTIES; MICROSTRUCTURE; NANOSTRUCTURES; SCANNING ELECTRON MICROSCOPY; SILICON NITRIDES; SINTERING; TITANIUM NITRIDES
Descriptors DEC
CURRENTS; ELECTRIC CURRENTS; ELECTRIC DISCHARGES; ELECTRON MICROSCOPY; FABRICATION; MICROSCOPY; NITRIDES; NITROGEN COMPOUNDS; PNICTIDES; SILICON COMPOUNDS; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS