Effect of TiO 2 addition on thermal and mechanical properties of Y-Si-Al-O-N glasses

Toru Wakihara; Junichi Tatami; Katsutoshi Komeya; Takeshi Meguro; Abdessamad Kidari; Stuart Hampshire; Michael J. Pomeroy

doi:10.1016/j.jeurceramsoc.2011.12.002

Effect of TiO ₂ addition on thermal and mechanical properties of Y-Si-Al-O-N glasses

Toru Wakihara, Junichi Tatami, Katsutoshi Komeya, Takeshi Meguro, Abdessamad Kidari, Stuart Hampshire, Michael J. Pomeroy

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Abstract

Y-Si-Al-O-N glasses are intergranular phases in silicon nitride based ceramics in which the composition and volume fraction of oxynitride glass phases determine the sintering/shrinkage behaviour. Several investigations on oxynitride glass formation and properties have shown that addition of nitrogen increases glass transition and softening temperatures, viscosity, elastic modulus and hardness. In the present study, effect of TiO ₂ addition on thermal and mechanical properties of Y-Si-Al-O-N glasses is investigated since the most typical Si ₃N ₄ ceramics for bearing applications are fabricated using a Si ₃N ₄-Y ₂O ₃-Al ₂O ₃-TiO ₂-AlN system. Addition of TiO ₂ is effective in preparing Y-Si-Al-O-N glasses with lower glass transition temperatures and with higher hardness.

Original language	English
Pages (from-to)	1157-1161
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	32
Issue number	6
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2011.12.002
Publication status	Published - Jun 2012

Keywords

C. Hardness
D. Glass
D. Nitrides
D. Si N
D. Sialon

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10.1016/j.jeurceramsoc.2011.12.002

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title = "Effect of TiO 2 addition on thermal and mechanical properties of Y-Si-Al-O-N glasses",

abstract = "Y-Si-Al-O-N glasses are intergranular phases in silicon nitride based ceramics in which the composition and volume fraction of oxynitride glass phases determine the sintering/shrinkage behaviour. Several investigations on oxynitride glass formation and properties have shown that addition of nitrogen increases glass transition and softening temperatures, viscosity, elastic modulus and hardness. In the present study, effect of TiO 2 addition on thermal and mechanical properties of Y-Si-Al-O-N glasses is investigated since the most typical Si 3N 4 ceramics for bearing applications are fabricated using a Si 3N 4-Y 2O 3-Al 2O 3-TiO 2-AlN system. Addition of TiO 2 is effective in preparing Y-Si-Al-O-N glasses with lower glass transition temperatures and with higher hardness.",

keywords = "C. Hardness, D. Glass, D. Nitrides, D. Si N, D. Sialon",

author = "Toru Wakihara and Junichi Tatami and Katsutoshi Komeya and Takeshi Meguro and Abdessamad Kidari and Stuart Hampshire and Pomeroy, {Michael J.}",

year = "2012",

month = jun,

doi = "10.1016/j.jeurceramsoc.2011.12.002",

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journal = "Journal of the European Ceramic Society",

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T1 - Effect of TiO 2 addition on thermal and mechanical properties of Y-Si-Al-O-N glasses

AU - Wakihara, Toru

AU - Tatami, Junichi

AU - Komeya, Katsutoshi

AU - Meguro, Takeshi

AU - Kidari, Abdessamad

AU - Hampshire, Stuart

AU - Pomeroy, Michael J.

PY - 2012/6

Y1 - 2012/6

N2 - Y-Si-Al-O-N glasses are intergranular phases in silicon nitride based ceramics in which the composition and volume fraction of oxynitride glass phases determine the sintering/shrinkage behaviour. Several investigations on oxynitride glass formation and properties have shown that addition of nitrogen increases glass transition and softening temperatures, viscosity, elastic modulus and hardness. In the present study, effect of TiO 2 addition on thermal and mechanical properties of Y-Si-Al-O-N glasses is investigated since the most typical Si 3N 4 ceramics for bearing applications are fabricated using a Si 3N 4-Y 2O 3-Al 2O 3-TiO 2-AlN system. Addition of TiO 2 is effective in preparing Y-Si-Al-O-N glasses with lower glass transition temperatures and with higher hardness.

AB - Y-Si-Al-O-N glasses are intergranular phases in silicon nitride based ceramics in which the composition and volume fraction of oxynitride glass phases determine the sintering/shrinkage behaviour. Several investigations on oxynitride glass formation and properties have shown that addition of nitrogen increases glass transition and softening temperatures, viscosity, elastic modulus and hardness. In the present study, effect of TiO 2 addition on thermal and mechanical properties of Y-Si-Al-O-N glasses is investigated since the most typical Si 3N 4 ceramics for bearing applications are fabricated using a Si 3N 4-Y 2O 3-Al 2O 3-TiO 2-AlN system. Addition of TiO 2 is effective in preparing Y-Si-Al-O-N glasses with lower glass transition temperatures and with higher hardness.

KW - C. Hardness

KW - D. Glass

KW - D. Nitrides

KW - D. Si N

KW - D. Sialon

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SN - 0955-2219

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JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 6

ER -

Effect of TiO ₂ addition on thermal and mechanical properties of Y-Si-Al-O-N glasses

Abstract

Keywords

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