Fibrous ZrO2-mullite porous ceramics fabricated by a hydratable alumina based aqueous gel-casting process

doi:10.1016/j.ceramint.2019.01.209

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	Fibrous ZrO2-mullite porous ceramics fabricated by a hydratable alumina based aqueous gel-casting process
	Yuan, Lei 3; Liu, Zhenli 3; Hou, Xinghui 4; Liu, Zongquan 3; Zhu, Qiang 1; Wang, Shaogang 2; Ma, Beiyue 3; Yu, Jingkun 3
刊名	CERAMICS INTERNATIONAL
	2019-05-01
卷号	45 期号:7 页码:8824-8831
关键词	Porous ceramic Mullite fibers ZrO2 rho-Al2O3 Gel-casting
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2019.01.209
通讯作者	Yu, Jingkun(yujk@smm.neu.edu.cn)
英文摘要	A near-net-shape ZrO2-mullite fibrous ceramic has been successfully fabricated by a novel aqueous gel-casting using the hydratable alumina (rho-Al2O3), zircon and mullite fibers as the raw materials. The phase compositions, microstructure, sintering behaviors and properties of the as-prepared porous ceramic were observed and analyzed by XRD, FESEM with EDS, XRT and other testing methods. The effects of mullite fiber content and Y2O3 additive on the improvement of the comprehensive performance were investigated and discussed. The results showed that the hydrates from rho-Al2O3 could react with zircon to form the binder to combine the mullite fibers together into a bird nest structure, and mullite strips and ZrO2 grains wrapped on the fibers decreased with increasing the contents of fibers. The as-prepared porous ceramic had the increase of apparent porosity and the decrease of shrinkage and bulk density as the amounts of fibers increased. And the low thermal conductivity (0.752-0.854 W(m.K)(-1)) and high compressive strength (10.4-14.4 MPa) played an important role on its wide applications. In addition, the introduction of Y2O3 additive could remarkably increase the compressive strength to 18.8 MPa by promoting the formation of YSZ and Y-Al-Si-O glass phase.
资助项目	National Natural Science Foundation of China[51874083] ; National Natural Science Foundation of China[51404056]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000463688500096
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/132775]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yu, Jingkun
作者单位	1.Univ New South Wales, Mark Wainwright Analyt Ctr, Electron Microscope Unit, Sydney, NSW 2032, Australia 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China 4.Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Henan, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Lei,Liu, Zhenli,Hou, Xinghui,et al. Fibrous ZrO2-mullite porous ceramics fabricated by a hydratable alumina based aqueous gel-casting process[J]. CERAMICS INTERNATIONAL,2019,45(7):8824-8831.
APA	Yuan, Lei.,Liu, Zhenli.,Hou, Xinghui.,Liu, Zongquan.,Zhu, Qiang.,...&Yu, Jingkun.(2019).Fibrous ZrO2-mullite porous ceramics fabricated by a hydratable alumina based aqueous gel-casting process.CERAMICS INTERNATIONAL,45(7),8824-8831.
MLA	Yuan, Lei,et al."Fibrous ZrO2-mullite porous ceramics fabricated by a hydratable alumina based aqueous gel-casting process".CERAMICS INTERNATIONAL 45.7(2019):8824-8831.