Anisotropy of Compressive Strength in Porous Alumina Ceramics

Ieva Zake-Tiluga; Ruta Svinka; Visvaldis Svinka

doi:10.4028/www.scientific.net/KEM.604.153

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 604Anisotropy of Compressive Strength in Porous...

Anisotropy of Compressive Strength in Porous Alumina Ceramics

Abstract:

Anisotropy of the compressive strength was investigated in porous alumina based ceramics produced by slip casting method. Aluminium paste was used as pore former similarly as in the aerated concrete technology. Materials were sintered at 1650°C and 1750°C. The apparent porosity of the investigated materials was in the range of 54±1% to 60±2%. The compressive strength of the samples in the directions parallel and perpendicular to the sample expansion direction was in the range from 3.8±0.3 to 13.0±1.1 MPa and from 6.4±1.3 to 27.0±1.1 MPa, respectively. The mechanical anisotropy was related with the flattening of the introduced pores. The level of mechanical anisotropy was affected by the initial composition of the slurry and sintering temperature.

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Periodical:

Key Engineering Materials (Volume 604)

Pages:

153-156

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.604.153

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Online since:

March 2014

Authors:

Ieva Zake-Tiluga*, Ruta Svinka, Visvaldis Svinka

Keywords:

Alumina, Anisotropy, Compressive Strength, Mullite, Porous Ceramics

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