Preparation and properties of Si2N2O/beta-cristobalite composites
文献类型：期刊论文
| 作者 | Q. F. Tong ; J. Y. Wang ; Z. P. Li ; Y. C. Zhou |
| 刊名 | Journal of the European Ceramic Society
 |
| 出版日期 | 2008 |
| 卷号 | 28期号:6页码:1227-1234 |
| 关键词 | cristobalite mechanical properties dielectric properties SiO2 Si2N2O silicon oxynitride ceramics beta-cristobalite glasses crystallization transformation stabilization toughness strength phase |
| ISSN号 | 0955-2219 |
| 中文摘要 | Bulk Si2N2O/beta-cristobalite composites have been fabricated by a hot-pressing method using Si3N4, SiO2 and Li2CO3 as starting materials. beta-Cristobalite in the as-sintered composites is successfully stabilized to room temperature through incorporating N and Li into its structure. The introduction of beta-cristobalite significantly improves the dielectric properties. Si2N2O/62vol.% beta-cristobalite composite shows a low dielectric constant of 4.8 at 1 MHz. In addition, the density, Young's and shear modulus, and strength of the composites decrease with the increase of beta-cristobalite content. When the beta-cristobalite content is up to 62 vol.%, the flexural strength of the composite reaches 212 MPa. The bulk Si2N2O/beta-cristobalite composites show the combination of low density, excellent mechanical performance, low dielectric constant and loss tangent, indicating that they are promising high-temperature structural/functional materials. (c) 2007 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/33108]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Q. F. Tong,J. Y. Wang,Z. P. Li,et al. Preparation and properties of Si2N2O/beta-cristobalite composites[J]. Journal of the European Ceramic Society,2008,28(6):1227-1234. |
| APA | Q. F. Tong,J. Y. Wang,Z. P. Li,&Y. C. Zhou.(2008).Preparation and properties of Si2N2O/beta-cristobalite composites.Journal of the European Ceramic Society,28(6),1227-1234. |
| MLA | Q. F. Tong,et al."Preparation and properties of Si2N2O/beta-cristobalite composites".Journal of the European Ceramic Society 28.6(2008):1227-1234. |
入库方式： OAI收割
来源：金属研究所
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