KMS Shanghai Institute of Ceramics，Chinese Academy of Sciences
| High-strength porous mullite ceramics fabricated from particle-stabilized foams via oppositely charged dispersants and surfactants | |
| Ren, Jiantao; Ying, Wei; Zhao, Jin; Xie, Jianjun; Zhou, Guohong; Shi, Ying; Wang, Shiwei | |
| 2019-04-01 | |
| Source Publication | CERAMICS INTERNATIONAL
 |
| ISSN | 0272-8842 |
| Volume | 45Issue:5Pages:6385 |
| Subtype | Article |
| Abstract | Closed-cell ceramics have attracted broad attention in many areas such as thermal insulation and radomes due to their high strength, low density, and moisture isolation. In this paper, closed-cell mullite ceramics were prepared from particle-stabilized foams via oppositely charged dispersants and surfactants. Mullite particles were dispersed via an anionic dispersant and then hydrophobically modified via a cationic surfactant. The surfactant with long hydrocarbon chains made the particles very hydrophobic, which contributed to the gelation of the particle-stabilized foam. Finally, high-strength porous mullite ceramics with closed cells were obtained. Typically, a compressive strength up to 27.3 MPa was obtained for ceramics with 75% porosity. This is higher than those fabricated by other processes due to the fine and homogeneous cells of the ceramics. We close with a discussion on the effects of the dispersant and surfactant concentration on the porosity, microstructure, and compressive strength of the porous mullite ceramics. |
| Keyword | Particle-stabilized foam Gelcasting Porous mullite ceramics Compressive strength Cell size |
| DOI | 10.1016/j.ceramint.2018.12.125 |
| Language | 英语 |
| WOS Research Area | Materials Science |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sic.ac.cn/handle/331005/27236 |
| Collection | 中国科学院上海硅酸盐研究所 |
| Recommended Citation GB/T 7714 | Ren, Jiantao,Ying, Wei,Zhao, Jin,et al. High-strength porous mullite ceramics fabricated from particle-stabilized foams via oppositely charged dispersants and surfactants[J]. CERAMICS INTERNATIONAL,2019,45(5):6385. |
| APA | Ren, Jiantao.,Ying, Wei.,Zhao, Jin.,Xie, Jianjun.,Zhou, Guohong.,...&Wang, Shiwei.(2019).High-strength porous mullite ceramics fabricated from particle-stabilized foams via oppositely charged dispersants and surfactants.CERAMICS INTERNATIONAL,45(5),6385. |
| MLA | Ren, Jiantao,et al."High-strength porous mullite ceramics fabricated from particle-stabilized foams via oppositely charged dispersants and surfactants".CERAMICS INTERNATIONAL 45.5(2019):6385. |
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