Prediction and control of microstructure evolution for sub-microscale α-Al2O3 during low-heating-rate sintering based on the master sintering curve theory
✍ Scribed by W.Q. Shao; S.O. Chen; D. Li; H.S. Cao; Y.C. Zhang; S.S. Zhang
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 279 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0955-2219
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✦ Synopsis
The master sintering curve (MSC) can sometimes be used for analyzing the shrinkage behaviour of ceramics. Densification of ␣-Al 2 O 3 with the mean particle size of 350 nm was continuously recorded during heating at 0.5, 2 and 5 • C/min. A MSC was successfully constructed using dilatometry data with the help of combined-stage sintering model. The validity of the MSC has been verified by a few experimental runs. The microstructural evolution with densification during different heating-rate sintering was explored. The sintered microstructure is a function of the time-temperature sintering conditions, and it is verified that there exists a link between sintered density and microstructure. The MSC can be used to predict and control microstructure evolution during sintering of ␣-Al 2 O 3 ceramics.