| Fibrous ZrO2-mullite porous ceramics fabricated by a hydratable alumina based aqueous gel-casting process | |
| Yuan, Lei1; Liu, Zhenli1; Hou, Xinghui2; Liu, Zongquan1; Zhu, Qiang3; Wang, Shaogang4; Ma, Beiyue1; Yu, Jingkun1 | |
| Corresponding Author | Yu, Jingkun(yujk@smm.neu.edu.cn) |
| 2019-05-01 | |
| Source Publication | CERAMICS INTERNATIONAL
 |
| ISSN | 0272-8842 |
| Volume | 45Issue:7Pages:8824-8831 |
| Abstract | 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. |
| Keyword | Porous ceramic Mullite fibers ZrO2 rho-Al2O3 Gel-casting |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.ceramint.2019.01.209 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51874083] ; National Natural Science Foundation of China[51404056] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000463688500096 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/132774 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Yu, Jingkun |
| Affiliation | 1.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China 2.Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Henan, Peoples R China 3.Univ New South Wales, Mark Wainwright Analyt Ctr, Electron Microscope Unit, Sydney, NSW 2032, Australia 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| Recommended Citation 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. |
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