Journal of Advanced Ceramics

, Volume 6, Issue 2, pp 129–138 | Cite as

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

  • Bijay Basnet
  • Naboneeta Sarkar
  • Jung Gyu Park
  • Sangram Mazumder
  • Ik Jin Kim
Open Access
Research Article

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 °C 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).

Keywords

Al2TiO5 direct foaming Laplace pressure adsorption free energy porous ceramics 

Notes

Acknowledgements

This research was financially supported by Hanseo University.

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© 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.

Authors and Affiliations

  • Bijay Basnet
    • 1
  • Naboneeta Sarkar
    • 2
  • Jung Gyu Park
    • 1
  • Sangram Mazumder
    • 1
  • Ik Jin Kim
    • 1
  1. 1.Institute of Processing and Application of Inorganic Materials (PAIM)Hanseo UniversityChungnamRepublic of Korea
  2. 2.School of Mechanical and Materials EngineeringWashington State University PullmanWashingtonUSA

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