Formation and Microstructure of Silicide-Particle-Reinforced Si3N4 Composites with Crystallized Grain Boundary Phase of Yb2Si2O7
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- Material Type
- 記事
- Author/Editor
- 飯塚 建興日向 秀樹北 英紀
- Alternative Title
- 結晶化したYb2Si2O7粒界相を持つシリサイド粒子強化Si3N4複合材料の作製と微構造
- Periodical title
- 日本セラミックス協会学術論文誌 / 日本セラミックス協会 [編]
- No. or year of volume/issue
- 114(1336) 2006.12
- Volume
- 114
- Issue
- 1336
- Pages
- 1126～1132
- Publication date of volume/issue (W3CDTF)
- 2006-12
- ISSN (Periodical Title)
- 0914-5400
- ISSN-L (Periodical Title)
- 0914-5400
- Publication (Periodical Title)
- 東京 : 日本セラミックス協会
- Place of Publication (Country Code)
- JP
- Text Language Code
- eng
- NDLC
- Target Audience
- 一般
- Holding library
- 国立国会図書館
- Call No.
- Z17-249
- Data Provider (Database)
- 国立国会図書館 : 国立国会図書館雑誌記事索引
- Bibliographic ID (NDL)
- 8601931
- Bibliographic Record Category (NDL)
- 632
- Summary, etc.
- Silicide-particle-reinforced Si<sub>3</sub>N<sub>4</sub> composites with a crystallized grain boundary phase of Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> were synthesized in-situ by hot-pressing Si<sub>3</sub>N<sub>4</sub> with the metal oxides M<sub><i>p</i></sub>O<sub><i>q</i></sub> (silicide-forming oxides), which can react with Si<sub>3</sub>N<sub>4</sub> to form silicide, and Yb<sub>2</sub>O<sub>3</sub> as sintering additives. The reaction between Si<sub>3</sub>N<sub>4</sub>, silicide-forming oxide (Ta<sub>2</sub>O<sub>5</sub> or MoO<sub>3</sub>) and Yb<sub>2</sub>O<sub>3</sub> at high temperatures generated silicide (Ta<sub>3</sub>Si or Mo<sub>5</sub>Si<sub>3</sub>) particles and a grain boundary phase, Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>, simultaneously. The silicide particles mainly existed at the grain boundaries, but a small amount of Ta<sub>3</sub>Si particles were detected from Si<sub>3</sub>N<sub>4</sub> grains. Ta<sub>3</sub>Si particle grew up to a polyhedron shape, but Mo<sub>5</sub>Si<sub>3</sub> particle to a spherical shape. To obtain the crystallized grain boundary phase of RE<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>, the molar ratio of Yb<sub>2</sub>O<sub>3</sub> to M<sub><i>p</i></sub>O<sub><i>q</i></sub> should be adjusted to <i>q</i>/4 (<i>q</i>: the number of oxygen atoms in M<sub><i>p</i></sub>O<sub><i>q</i></sub>). However, because a small amount of oxygen was included in Si<sub>3</sub>N<sub>4</sub> powder and existed on the surface of Si<sub>3</sub>N<sub>4</sub> as SiO<sub>2</sub>, the excess SiO<sub>2</sub> reacted with Si<sub>3</sub>N<sub>4</sub> to generate a trace of Si<sub>2</sub>N<sub>2</sub>O grain. In the silicide-Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-Si<sub>3</sub>N<sub>4</sub> composites, the grain boundary phases were crystallized, but thin amorphous films with a thickness of 1 nm were detected from the interfaces between the silicide particle, Si<sub>3</sub>N<sub>4</sub> grain, and the grain boundary phase of Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>. The dense silicide particles reinforced Si<sub>3</sub>N<sub>4</sub> matrix composites can be obtained by using this in-situ synthesis method, and the flexural strength and fracture toughness of Ta<sub>3</sub>Si-Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-Si<sub>3</sub>N<sub>4</sub> composite were 1209 MPa, and 6.0 MPa•m<sup>1/2</sup>, respectively.<br>
- DOI
- 10.2109/jcersj.114.1126
- Access Restrictions
- インターネット公開
- Data Provider (Database)
- 科学技術振興機構 : J-STAGE
- Summary, etc.
- Silicide-particle-reinforced Si<sub>3</sub>N<sub>4</sub> composites with a crystallized grain boundary phase of Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> were synthesized in-situ by hot-pressing Si<sub>3</sub>N<sub>4</sub> with the metal oxides M<sub><i>p</i></sub>O<sub><i>q</i></sub> (silicide-forming oxides), which can react with Si<sub>3</sub>N<sub>4</sub> to form silicide, and Yb<sub>2</sub>O<sub>3</sub> as sintering additives. The reaction between Si<sub>3</sub>N<sub>4</sub>, silicide-forming oxide (Ta<sub>2</sub>O<sub>5</sub> or MoO<sub>3</sub>) and Yb<sub>2</sub>O<sub>3</sub> at high temperatures generated silicide (Ta<sub>3</sub>Si or Mo<sub>5</sub>Si<sub>3</sub>) particles and a grain boundary phase, Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>, simultaneously. The silicide particles mainly existed at the grain boundaries, but a small amount of Ta<sub>3</sub>Si particles were detected from Si<sub>3</sub>N<sub>4</sub> grains. Ta<sub>3</sub>Si particle grew up to a polyhedron shape, but Mo<sub>5</sub>Si<sub>3</sub> particle to a spherical shape. To obtain the crystallized grain boundary phase of RE<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>, the molar ratio of Yb<sub>2</sub>O<sub>3</sub> to M<sub><i>p</i></sub>O<sub><i>q</i></sub> should be adjusted to <i>q</i>/4 (<i>q</i>: the number of oxygen atoms in M<sub><i>p</i></sub>O<sub><i>q</i></sub>). However, because a small amount of oxygen was included in Si<sub>3</sub>N<sub>4</sub> powder and existed on the surface of Si<sub>3</sub>N<sub>4</sub> as SiO<sub>2</sub>, the excess SiO<sub>2</sub> reacted with Si<sub>3</sub>N<sub>4</sub> to generate a trace of Si<sub>2</sub>N<sub>2</sub>O grain. In the silicide-Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-Si<sub>3</sub>N<sub>4</sub> composites, the grain boundary phases were crystallized, but thin amorphous films with a thickness of 1 nm were detected from the interfaces between the silicide particle, Si<sub>3</sub>N<sub>4</sub> grain, and the grain boundary phase of Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>. The dense silicide particles reinforced Si<sub>3</sub>N<sub>4</sub> matrix composites can be obtained by using this in-situ synthesis method, and the flexural strength and fracture toughness of Ta<sub>3</sub>Si-Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-Si<sub>3</sub>N<sub>4</sub> composite were 1209 MPa, and 6.0 MPa•m<sup>1/2</sup>, respectively.<br>
- DOI
- 10.2109/jcersj.114.1126
- Access Restrictions
- インターネット公開
- Related Material (URI)
- References
- Microstructural Evolution and Mechanical Properties of Si <sub>3</sub> N <sub>4</sub> with Yb <sub>2</sub> O <sub>3</sub> as a Sintering AdditiveKinetics of Oxidation of Hot‐Pressed Silicon Nitride Containing MagnesiaHot-pressed Si3N4-32% SiC nanocomposite from amorphous Si-C-N powder with improved strength above 1200 �COxidation and Strength Retention of Monolithic Si <sub>3</sub> N <sub>4</sub> and Nanocomposite Si <sub>3</sub> N <sub>4</sub> ‐SiC with Yb <sub>2</sub> O <sub>3</sub> as a Sintering AidOxidation behaviour of the sintered Si3N4-Y2O3-Al2O3 systemOxidation Behavior and Effect of Oxidation on Strength of Si<sub>3</sub>N<sub>4</sub>/SiC NanocompositesOxidation behaviour and strength degradation of a Yb 2 O 3 -SiO 2 -doped hot-pressed silicon nitride between 1200 and 1500°CIn situ synthesis of Mo5Si3 particle reinforced Si3N4 composite with crystallized grain boundary phase of Yb2Si2O7The effects of ytterbium oxide on the microstructure and R-curve behaviors of silicon nitrideMicrostructures and Properties of Mo <sub>5</sub> Si <sub>3</sub> ‐Particle‐Reinforced Si <sub>3</sub> N <sub>4</sub> ‐Matrix CompositesOxidation behavior and effect of oxidation on mechanical properties of Mo5Si3 particle-reinforced Si3N4 compositesOxidation Behavior of Rare‐Earth Disilicate–Silicon Nitride CeramicsHigh temperature strength and oxidation behaviour of hot-pressed silicon nitride-disilicate ceramicsEffect of Y2O3 and Yb2O3 on the microstructure and mechanical properties of silicon nitrideThe effect of additives on sintering behavior and strength retention in silicon nitride with RE-disilicateStrength and Creep Behavior of Rare‐Earth Disilicate–Silicon Nitride CeramicsFabrication and Secondary‐Phase Crystallization of Rare‐Earth Disilicate–Silicon Nitride CeramicsPhase Relations and Stability Studies in the Si <sub>3</sub> N <sub>4</sub> ‐SiO <sub>2</sub> ‐Y <sub>2</sub> O <sub>3</sub> Pseudoternary SystemThe effects of post heat-treatment on the microstructure and fracture behaviors of Yb2O3-doped Si3N4Microstructure and mechanical properties of Si3N4/SiC composites酸化タンタルの添加によるＹｂ２Ｓｉ２Ｏ７粒界相を持つＭｏ５Ｓｉ３粒子強化Ｓｉ３Ｎ４複合材料の微構造への影響Y<sub>2</sub>O<sub>3</sub>とAl<sub>2</sub>O<sub>3</sub>を添加剤として加圧焼結したSi<sub>3</sub>N<sub>4</sub>の酸化挙動Ｍｏ５Ｓｉ３粒子強化Ｓｉ３Ｎ４複合材料の作製と摺動特性焼結過程の反応で生成したＦｅ５Ｓｉ３粒子分散Ｓｉ３Ｎ４の微細組織
- Data Provider (Database)
- 国立情報学研究所 : CiNii Research
- Original Data Provider (Database)
- Japan Link Center雑誌記事索引データベースCrossrefCiNii Articles
- Bibliographic ID (NDL)
- 8601931
- NAID
- 110004997694