Improvement of the Technology of High-Porosity, Permeable, Cellular, Ceramic Materials

The rheological properties of corundum suspensions were studied. It is shown that to prepare corundum slurry in obtaining ceramic, high-porosity, permeable, cellular materials (HPCM) by the method of duplicating the structure of polymer matrices the minimum possible ratio S : L of the disperse phase and the dispersion medium is 2.3 : 1 and the weight content of polyvinyl alcohol in the corundum slurry is 1 – 3%. It was proved experimentally that corundum suspensions with such a ratio of the disperse phase and the dispersion medium are coagulation structures with characteristic thixotropic behavior.

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Notes

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    Stresses directed along the tangent to the surface which result in shear deformation.

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    Viscosity under an applied load.

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Correspondence to V. N. Grunskii.

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Translated from Steklo i Keramika, No. 4, pp. 15 – 21, April, 2019.

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Bespalov, A.V., Grunskii, V.N., Makarov, N.A. et al. Improvement of the Technology of High-Porosity, Permeable, Cellular, Ceramic Materials. Glass Ceram 76, 131–136 (2019). https://doi.org/10.1007/s10717-019-00149-8

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Key words

  • ceramic high-porosity permeable cellular materials (HPCM)
  • corundum suspension
  • rheological properties
  • thixotropy