Cost effective preparation of Si3N4 ceramics with improved thermal conductivity and mechanical properties
文献类型：期刊论文
| 作者 | Duan, YS; Liu, N; Zhang, JX; Zhang, H; Li, XG |
| 刊名 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| 出版日期 | 2020-02-01 |
| 期号 | 2页码:298 |
| ISSN号 | 0955-2219 |
| DOI | 10.1016/j.jeurceramsoc.2019.10.003 |
| 文献子类 | Article |
| 英文摘要 | High-purity silicon powder is used as the starting material for cost-effective preparation of silicon nitride ceramics with both high thermal conductivity and excellent mechanical properties using RE2O3 (RE= Y, La or Er) and MgO as sintering additives. Nitridation is a key procedure that would affect the properties of green bodies and the sintered samples. The beta: (alpha+beta) ratio can be increased as the samples nitrided at 1450 degrees C and a large amount of long rod-like beta-Si3N4 grains were developed in the samples. It was found that the addition of Er2O3-MgO could help to improve the mechanical properties of the sintered Si3N4 ceramics, the thermal conductivity, flexural strength and fracture toughness of the sample were 90 W/(m.K), 953 +/- 28.3 MPa and 10.64 +/- 0.61 MPa.m(1/2), respectively. The RE3+ species with larger ionic radius tended to increase the oxygen of nitrided samples and decrease N/O ratio (triangle grain boundary) of sintered samples. |
| WOS关键词 | BONDED SILICON-NITRIDE ; PHASE-TRANSFORMATION ; OXYGEN-CONTENT ; POWDER ; MICROSTRUCTURE ; SI ; BETA-SI3N4 ; ADDITIVES ; KINETICS ; GROWTH |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28351]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Duan, YS,Liu, N,Zhang, JX,et al. Cost effective preparation of Si3N4 ceramics with improved thermal conductivity and mechanical properties[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020(2):298. |
| APA | Duan, YS,Liu, N,Zhang, JX,Zhang, H,&Li, XG.(2020).Cost effective preparation of Si3N4 ceramics with improved thermal conductivity and mechanical properties.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY(2),298. |
| MLA | Duan, YS,et al."Cost effective preparation of Si3N4 ceramics with improved thermal conductivity and mechanical properties".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY .2(2020):298. |
入库方式： OAI收割
来源：上海硅酸盐研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。