High-strength porous mullite ceramics fabricated from particle-stabilized foams via oppositely charged dispersants and surfactants

doi:10.1016/j.ceramint.2018.12.125

	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
刊名	CERAMICS INTERNATIONAL
	2019-04-01
卷号	45 期号:5 页码:6385
关键词	Particle-stabilized foam Gelcasting Porous mullite ceramics Compressive strength Cell size
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2018.12.125
文献子类	Article
英文摘要	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.
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27236]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 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.