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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.120  No.1406 (October) (2012)  >  pp.413-416

Journal of the Ceramic Society of Japan
<<Previous article Vol.120  No.1406 (October) (2012)   pp.413 - 416 Next article>>

Synthesis of porous Al2TiO5 ceramic by reaction sintering method

Cui HONGZHI1), Xu GUOGANG1), Ge CHUANLIANG1), Jiang LIN1), Zheng WENLONG1)
1) College of Material Science and Engineering, Shandong University of Science and Technology

In this paper, porous aluminum titanate (Al2TiO5) ceramic was fabricated by reaction sintering method using Al2O3 and TiO2 as raw materials and corn starch as pore-forming agent. In order to decrease the decomposition and improve strength of porous Al2TiO5 ceramic, 5 wt % of Fe2O3 and 4 wt % of SiO2 were added as modifying agents. The influences of sintering temperature and content of pore-forming agent on phase constitution, apparent porosity, compressive strength and elemental distributions of the sintered products were investigated. The results show that porous Al2TiO5 ceramics with apparent porosity about 45–48% can be produced by reaction sintering method at temperature of 1500°C for 2 h. The synthesis yield of pure Al2TiO5 can achieve more than 95% using 5 wt % Fe2O3 and 4 wt % of SiO2 as modifying agents when sintering temperature was 1500°C. The distributions of Fe, Ti, Al and O are homogeneous in the grain, however majority of Si distributed in the grain boundaries of Al2TiO5 which is proved by the EMPA (elemental mapping image analysis).


Keyword:
Reaction sintering, Porous ceramic, Al2TiO5

Received: May 15, 2012
Accepted: August 14, 2012 , Published online: October 01, 2012
Copyright © 2012 The Ceramic Society of Japan

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