Paper Titles

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

Dielectric Properties of β-SiAlON at High Temperature Using Perturbation Method
p.121

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

HomeKey Engineering MaterialsKey Engineering Materials Vol. 403High-Temperature Compressive Deformation of SiAlON...

High-Temperature Compressive Deformation of SiAlON Polycrystals Prepared without Additives

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Abstract:

The high-temperature deformation of dense nano-sized Ca-α SiAlON and submicron- sized β-SiAlON polycrystals were investigated by compression tests. These polycrystals were fabricated from Ca-α SiAlON and β-SiAlON nano powders respectively, and contained almost no intergranular glass phase. Both SiAlONs exhibited large plastic deformations with the stress exponent n ~1 in the higher stress region, and n ~2 in the lower stress region. Shear-thickening creep (n < 1), which has been reported in liquid contained SiAlONs, was not observed.

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Periodical:

Key Engineering Materials (Volume 403)

Pages:

117-120

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.403.117

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Online since:

December 2008

Authors:

Kentarou Chihara, Daisuke Hiratsuka, Junichi Tatami, Fumihiro Wakai, Katsutoshi Komeya

Keywords:

Deformation Mechanism, Grain Boundary, Intergranular Glass Phase, ß-SiAlON

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© 2009 Trans Tech Publications Ltd. All Rights Reserved

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