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Start Over Author "Tan, Hui" Journal advanced materials research
25 results on '"Tan, Hui"'

23. Synthesis of β-Sialon Ceramics Using Si, Al and Al2O3 Powders

Author

Zhang, He, Tang, Zhu Xing, Tan, Hui Hui, Xu, Ke Zhou, Zhang, Ying, and Li, Guo Chang

Abstract

Single-phase β-Sialon ceramic compacts with z=2 have been synthesized by reaction-bonded sintering using Si, Al and Al2O3 as raw materials. After post-sintering at 1550℃ for 2h, only β-Sialon ceramic compacts with z=2 was obtained. When the temperature up to 1650℃ and 1750℃, the decomposition reaction of samples was occurred.

Published
2012
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24. The Effect of SiC Content on Pressureless Sintered Si2ON2-SiC Ceramic

Author

Tang, Zhu Xing, Tan, Hui Hui, Zhang, He, Xu, Ke Zhou, and Zhang, Ying

Abstract

The Si¬2ON2-SiC ceramic was fabricated by pressureless sintering method. In this paper we researched the effect of SiC content (50%, 70% and 90%) on the performance of silicon oxynitride bonded silicon carbide ceramics. Through testing and analyzing the SEM, XRD, density and porosity of the final silicon oxynitride bonded silicon carbide ceramic samples, the results show that: changes in SiC content not only affect the bulk density of the composites but also affect the phase composition and the microstructure of fracture surface. The most compactness experimental product is sintered at1500℃ containing 50wt% SiC.

Published
2012
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25. Preparation and Microstructure of Pressureless Sintered Si2ON2-SiC Ceramic

Author

Tan, Hui Hui, Tang, Zhu Xing, Zhao, Xia, and Zhang, He

Abstract

This paper introduces Si2ON2-SiC ceramic fabricated by pressureless sintering method and studies the effect of additives, nitriding temperatures on bulk density, porosity, phase composition and microstructure. It is discovered that additives MgO, CeO2 can increase the densities of Si2ON2-SiC ceramic apparently, and MgO additive has a better effect than CeO2. Nitriding temperature also is an important factor. The bulk density of the specimen with MgO additive reaches maximum at 1.91 g/cm3 when sintered at 1450 ℃, and the bulk density of specimen with CeO2 additive is 1.86 g/cm3 at the same condition while the bulk density of the specimen without additive is only 1.75 g/cSuperscript textm3. The X-ray diffraction and scanning electron microscopy of the specimens show that the amount of Si2ON2 increase with the sintering temperature increase. But when the temperature is higher than 1500 ℃ the Si2ON2 grains will decompose into Si3N4, and Si2ON2 will vanish at 1550 ℃

Published
2011
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