Development of α-β SiAlON Ceramics from Different Si3N4 Starting Powders

Nurcan Calis Acikbas; Ferhat Kara; Hasan Mandal

doi:10.4028/www.scientific.net/KEM.403.107

Paper Titles

Synthesis and Refinement of β-SiAlON by Nitriding and Post-Sintering of Si Mixture
p.95

Interactions between AlN and SiAlON Ceramics
p.97

Surface Structuring of α/β-Sialon Ceramics by Plasma-Etching
p.99

SiAlON B-Phase Glass-Ceramic Microstructures
p.103

Development of α-β SiAlON Ceramics from Different Si₃N₄ Starting Powders
p.107

Effects of Process on Optical Transmittance of Dy-α-Sialon Sintered at Lower Temperatures
p.109

Mechanical Properties of α- and β-SiAlON Composite Ceramics Using β-SiAlON Powder
p.111

Tribological Performance of Translucent Dy-α-Sialon Ceramics
p.115

High-Temperature Compressive Deformation of SiAlON Polycrystals Prepared without Additives
p.117

HomeKey Engineering MaterialsKey Engineering Materials Vol. 403Development of α-β SiAlON Ceramics from Different...

Development of α-β SiAlON Ceramics from Different Si₃N₄ Starting Powders

Abstract:

- SiAlON ceramics were produced from different starting Si3N4 powders including β-Si3N4 and α-Si3N4 powders and mixtures of these powders. Gas pressure sintering was used for sintering. After sintering, resultant fracture toughness values were correlated with microstructure and starting powders. By optimizing chemistry and process parameters; - SiAlON ceramics with reasonable fracture toughness can be produced from rather coarse β-Si3N4 powder. This could improve the economic viability of SiAlON ceramics since -Si3N4 powders are less costly.