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Impregnation of the intermediate product reduces the shrinkage and deformation of corundum ceramics

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Refractories Aims and scope

Conclusions

The porosity of corundum intermediate products can be reduced by 6–7% by baking them at 1300°C and impregnating them three times with the melt of a 3/1 mixture of ammonium alum and potash alum while vibrating them to accelerate and improve the process.

The use of alumina fired beforehand at 1750°C and the impregnation of the specimens with the melt gave intermediate products with an open porosity of 17–19% which resulted in the firing shrinkage and deformation of the corundum ceramic being reduced by more than half without a degradation of its properties, whichwere similar to those of Kador ceramic.

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Authors and Affiliations

  1. Ukrainian Scientific-Research Institute of Refractories, Ukraine

    I. G. Orlova, L. A. Dergaputskaya & I. S. Kainarskii

Authors
  1. I. G. Orlova
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  2. L. A. Dergaputskaya
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  3. I. S. Kainarskii
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Translated from Ogneupory, No. 12, pp. 30–34, December, 1976.

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Orlova, I.G., Dergaputskaya, L.A. & Kainarskii, I.S. Impregnation of the intermediate product reduces the shrinkage and deformation of corundum ceramics. Refractories 17, 753–757 (1976). https://doi.org/10.1007/BF01319884

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  • DOI: https://doi.org/10.1007/BF01319884

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