There are lots of reactions in formation of mullite during sintering of kaolinite powder at high temperature. Primary mullite (M(I), 2Al2O3¡PSiO2) is the result of a solid state reaction of kaolinite. And secondary mullite (M(II) or M(III), 3Al2O3¡P2SiO2) is formed by vitrification after nucleation and grain growth. It has been investigated that the growth mechanism of secondary mullite and the texture of ceramics are affected by the process of green tape. Expect that the growth direction of crystal has been analyzed, the texture of kaolinite green tape formed by tape casting after sintered can not be reproduced.
In order to realize the mechanism in formation of mullite we study different green tape process by vitrification and observe the microstructure of mullite after sintering.. The microstructure is analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM).
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0910109-150702 |
| Date | 10 September 2009 |
| Creators | Wu, Chia-Han |
| Contributors | Wei-Lin Wang, Hong-Yang Lu, Chi-Shiung Hsi, Yu-Chuan Wu |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0910109-150702 |
| Rights | restricted, Copyright information available at source archive |
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