Prediction and control of microstructure evolution for sub-microscale α-Al2O3 during low-heating-rate sintering based on the master sintering curve theory |
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| Authors: | WQ Shao SO Chen D Li HS Cao YC Zhang SS Zhang |
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| Affiliation: | 1. College of Physics Science, Qingdao University, Qingdao 266071, PR China;2. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, PR China;1. Department of Computer Science & Engineering, Indian Institute of Technology, Roorkee 247667, India;2. Dean, Faculty of Engineering, Manipal University Jaipur, Jaipur 302026, Rajasthan, India |
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| Abstract: | The master sintering curve (MSC) can sometimes be used for analyzing the shrinkage behaviour of ceramics. Densification of α-Al2O3 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 α-Al2O3 ceramics. |
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