| Rheological behavior of alumina aqueous suspension for extrusion gelation freeform fabrication | |
| Yu, Zhiyong ; Qi, Xiwei ; Huang, Yong ; Wang, Chang'an ; Ouyang, Shixi | |
| 2010-05-10 ; 2010-05-10 ; OCT 23-26, 2005 | |
| 会议名称 | High-Performance Ceramics IV, Pts 1-3 ; 4th China International Conference on High-Performance Ceramics (CICC-4) ; Chengdu, PEOPLES R CHINA ; Web of Science |
| 关键词 | freeform fabrication gelation rheology alumina ALCOHOL) GELCASTING SUSPENSIONS CERAMICS Materials Science, Ceramics Materials Science, Composites |
| 中文摘要 | Extrusion gelation freeform fabrication (EGFF) is a new solid freeform fabrication technique to fabricate ceramic parts. The study of ceramic suspensions theological behavior is essential to a better understanding of parts fabrication through EGFF process. In this paper, the effects of dispersant concentrations, solids loading and binder composition on the rheological behavior of alumina suspensions were examined. The optimal amount of dispersant was found to be about 0.1 wt.%. The suspensions with 50 vol.% alumina and 1 wt.% sodium alginate show shear thickening behavior. Such behavior is unfavorable for extrusion gelation freeform fabrication. By addition of PVA or styrene-acrylic latex, the rheological behavior of suspensions was changed. The addition of PVA or latex has a great effect on the viscosity of the suspensions and the type of their theological behavior. The ceramic suspensions with PVA or latex were found to be shear thinning more suitable for EGFF. |
| 会议录出版者 | TRANS TECH PUBLICATIONS LTD ; STAFA-ZURICH ; LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND |
| 语种 | 英语 ; 英语 |
| 内容类型 | 会议论文 |
| 源URL | [http://hdl.handle.net/123456789/18364]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Yu, Zhiyong,Qi, Xiwei,Huang, Yong,et al. Rheological behavior of alumina aqueous suspension for extrusion gelation freeform fabrication[C]. 见:High-Performance Ceramics IV, Pts 1-3, 4th China International Conference on High-Performance Ceramics (CICC-4), Chengdu, PEOPLES R CHINA, Web of Science. |
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