Study on Sintering Properties of Al2O3-70 Natural Mullite by New Processes

Shu Long Liu; Yong Li; Huan Ying Yang; Chang He Gao; Shu Long Ma; Lin Jun Wang

doi:10.4028/www.scientific.net/AMR.690-693.49

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 690-693Study on Sintering Properties of Al2O3-70 Natural...

Study on Sintering Properties of Al₂O₃-70 Natural Mullite by New Processes

Abstract:

This paper explains sintering properties of Al2O3-70(referred to as the 70 green sample) natural mullite that was prepared by the process of homogenization, wet grinding, vacuum extrusion and high-temperature tunnel kiln sintering. The results show that 70 green sample's dehydroxylation temperature started in 528 °C; 70 green sample's sintering densification started in 1500 °C; 70 green sample had not completed sintering in the 1600 °C, and at this temperature, to prolong the holding time also won't realize densification. After sintering at 1600 °C, the sample's bulk density is 2.82. In this sample, the mullite phase was uniform distribution, density, low porosity and most are closed porosity.

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Periodical:

Advanced Materials Research (Volumes 690-693)

Pages:

49-52

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.690-693.49

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Online since:

May 2013

Authors:

Shu Long Liu, Yong Li, Huan Ying Yang, Chang He Gao, Shu Long Ma, Lin Jun Wang

Keywords:

Bauxite, Homogenization, Mullite, Sintered

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