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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
发表期刊Journal of the European Ceramic Society
ISSN09552219
卷号37期号:10页码:3285-3291
摘要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
DOI10.1016/j.jeurceramsoc.2017.04.013
EI入藏号20171603576206
EI主题词Nitrogen compounds
EI分类号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
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25930
专题中国科学院上海硅酸盐研究所
作者单位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
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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.
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