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Research Article | Open Access

Al2O3-TiO2/ZrO2-SiO2 based porous ceramics from particle-stabilized wet foam

Bijay BASNETaNaboneeta SARKARbJung Gyu PARKaSangram MAZUMDERaIk Jin KIMa( )
Institute of Processing and Application of Inorganic Materials (PAIM), Hanseo University, # 360, Seosan-si, Chungnam, 356-706, Republic of Korea
School of Mechanical and Materials Engineering, Washington State University Pullman, Washington, United States
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Abstract

The porous ceramics based on Al2O3-TiO2/ZrO2-SiO2 from particle-stabilized wet foam by direct foaming were discussed. The initial Al2O3-TiO2 suspension was prepared by adding TiO2 suspension to partially hydrophobized colloidal Al2O3 suspension with equimolar amount, to form Al2TiO5 on sintering. The secondary ZrO2-SiO2 suspension was prepared using the equimolar composition, and to obtain ZrSiO4, ZrTiO4, and mullite phases in the sintered samples, the secondary suspension was blended into the initial suspension at 0, 10, 20, 30, and 50 vol%. The wet foam exhibited an air content up to 87%, Laplace pressure from 1.38 to 2.23 mPa, and higher adsorption free energy at the interface of approximately 5.8×108 to 7.5×108 J resulting an outstanding foam stability of 87%. The final suspension was foamed, and the wet foam was sintered from 1400 to 1600 ℃ for 1 h. The porous ceramics with pore size from 150 to 400 μm on average were obtained. The phase identification was accomplished using X-ray diffraction (XRD), differential thermal analysis (DTA), and thermogravimetric analysis (TGA), and microstructural analysis was performed using field emission scanning electron microscopy (FESEM).

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Journal of Advanced Ceramics
Pages 129-138
Cite this article:
BASNET B, SARKAR N, PARK JG, et al. Al2O3-TiO2/ZrO2-SiO2 based porous ceramics from particle-stabilized wet foam. Journal of Advanced Ceramics, 2017, 6(2): 129-138. https://doi.org/10.1007/s40145-017-0225-5

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Received: 19 January 2017
Revised: 05 March 2017
Accepted: 17 March 2017
Published: 16 June 2017
© The author(s) 2017

Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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