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A novel method for fabrication of alumina foams with ellipsoidal aligned oriented pores

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Abstract

In this study, alumina foams with oriented pores were fabricated; using alumina as starting material and colloidal silica and albumin as binders via sponge replica method. Different processing parameters such as tension, chemical and thermal setting were performed for alumina foam forming. Moreover, porosity, orientation and compressive strength of the foams that fabricated in a thermal setting condition were investigated. Results showed that with the increase in compressive load during forming cause to variation of pores’ shape from spherical to ellipsoidal. In addition, the apparent densities of the samples were increased from 0.225 to 0.314 g/cm3. Moreover, compressive strength of samples was increased from 1.02 for spherical pore shaped to 2.72 and 3.71 MPa for pore aligned in major and minor axes of ellipsoid, respectively.

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Authors and Affiliations

  1. School of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran

    Mojgan Zahed & Mahdi Shafiee Afarani

  2. School of Chemical Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran

    Davod Mohebbi-Kalhori

Authors
  1. Mojgan Zahed
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  2. Mahdi Shafiee Afarani
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  3. Davod Mohebbi-Kalhori
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Correspondence to Mahdi Shafiee Afarani.

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Zahed, M., Shafiee Afarani, M. & Mohebbi-Kalhori, D. A novel method for fabrication of alumina foams with ellipsoidal aligned oriented pores. Appl. Phys. A 120, 215–220 (2015). https://doi.org/10.1007/s00339-015-9153-9

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  • DOI: https://doi.org/10.1007/s00339-015-9153-9

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