KMS Shanghai Institute of Ceramics，Chinese Academy of Sciences
| A novel method for preparing Si3N4ceramics with unidirectional oriented pores from silicon aqueous slurries | |
| Wan, Tao1,2; Yao, Dongxu1; Yin, Jinwei1; Xia, Yongfeng1; Zuo, Kaihui1; Liang, Hanqin1; Zeng, Yuping1 | |
| 2017 | |
| Source Publication | Journal of the European Ceramic Society
 |
| ISSN | 09552219 |
| Volume | 37Issue:10Pages:3285-3291 |
| Abstract | We describe a low-cost and simple method to prepare porous silicon nitride (Si3N4) ceramics with unidirectional oriented pores. Using Si powders as raw material, porous ceramics were fabricated via solidification of the aqueous slurries followed by the nitridation and post-sintering. The formation mechanism is similar to the ordered porous metals that are fabricated under high temperature and high pressure. Differently, the green bodies with oriented pores were obtained at room temperature and atmospheric pressure. The nucleation and growth of the H2bubbles generated from hydrolyzed Si powders contributed to the highly oriented pores along the solidification direction of the aqueous slurries. Additionally, the pore microstructure was closely associated with the viscosity of the slurries, which can be well controlled by varying the concentration of organic additive and solid loading. © 2017 Elsevier Ltd |
| DOI | 10.1016/j.jeurceramsoc.2017.04.013 |
| EI Accession Number | 20171603576206 |
| EI Keywords | Nitrogen compounds |
| EI Classification Number | 443.1 Atmospheric Properties - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 812.1 Ceramics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sic.ac.cn/handle/331005/25930 |
| Collection | 中国科学院上海硅酸盐研究所 |
| Affiliation | 1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 2.School of Materials Science and Engineering, The University of New South Wales, Sydney; 2052, Australia |
| Recommended Citation GB/T 7714 | Wan, Tao,Yao, Dongxu,Yin, Jinwei,et al. A novel method for preparing Si3N4ceramics with unidirectional oriented pores from silicon aqueous slurries[J]. Journal of the European Ceramic Society,2017,37(10):3285-3291. |
| APA | Wan, Tao.,Yao, Dongxu.,Yin, Jinwei.,Xia, Yongfeng.,Zuo, Kaihui.,...&Zeng, Yuping.(2017).A novel method for preparing Si3N4ceramics with unidirectional oriented pores from silicon aqueous slurries.Journal of the European Ceramic Society,37(10),3285-3291. |
| MLA | Wan, Tao,et al."A novel method for preparing Si3N4ceramics with unidirectional oriented pores from silicon aqueous slurries".Journal of the European Ceramic Society 37.10(2017):3285-3291. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment