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Porous Aluminum Titanate Ceramics Prepared Using Graphite as Pore Former

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Abstract:

This paper described the properties of porous aluminum titanate (AT) ceramics. The AT samples with composition of 41 wt% Al2O3, 50 wt% TiO2, 4.5 wt% MgO and 4.5 wt% Fe2O3 while 0~60 wt% graphite was used as pore former. The pore structures of the samples sintered at 1250~1350 oC were analyzed by scanning electron microscopy and Hg porosimetry, while the crystal phases of the aluminum titanate were analyzed by X-ray diffraction. After sintered at, the samples have open porosities of 25~51%, depending on the graphite amount and the sintering temperature. The porosity increases and the flexural strength decreases with the increasing amount of graphite.

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Periodical:

Advanced Materials Research (Volumes 960-961)

Pages:

189-192

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.960-961.189

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Online since:

June 2014

Authors:

Gen Fa Zhao*, Yang Bai, Li Jie Qiao

Keywords:

Aluminum Titanate, Porosity, Porous Ceramic, Thermal Expansion

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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