Thermal Conductivities of β-SiAlONs by Mechanically Activated Combustion Synthesis

R. Sivakumar; K. Aoyagi; T. Watanabe; T. Akiyama

doi:10.4028/www.scientific.net/KEM.403.139

Paper Titles

Dielectric Properties of SiAlON Ceramics
p.125

Subcritical Crack Growth of α/β-Sialon Ceramics in Distilled Water
p.129

Corrosion of β-SiAlON in Molten Aluminium, Cryolite and NaCl-KCl Mixture
p.133

Preparation and Corrosion of Mullite Thin Film on ß-SiAlON Ceramics
p.135

Thermal Conductivities of β-SiAlONs by Mechanically Activated Combustion Synthesis
p.139

Synthesis and Characterization of β-SiAlON Phosphor Powder Prepared by Reduction Nitridation of a Zeolite
p.141

New Ceramic Phases in the Ternary Si-C-N System
p.147

A New Route of Forming Silicon Carbide Nanostructures with Controlled Morphologies
p.149

TEM Study of SiCN Glasses; Polymer Architecture versus Ceramic Microstructure
p.153

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Thermal Conductivities of β-SiAlONs by Mechanically Activated Combustion Synthesis

Abstract:

–sialons (Si6-zAlzOzN8-z, z=3) synthesized by mechanically activated combustion synthesis (MA-CS) at a low N2 pressure of 1 MPa, were sintered by Spark Plasma Sintering (SPS) and thermal conductivity was measured at room temperatures. Specimens were fully densified at 1600oC for 10 mins. and showed only –sialon phases confirmed by x-ray diffraction patterns though un-reacted Si was present as impurities after MA-CS. Thermal conductivities increased with sintering temperature and had a maximum value 5.49 W m-1 K-1 for specimens sintered at 1700oC.