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Rheological and technological properties of titanium dioxide slips and the properties of the castings

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Conclusions

An investigation of the rheological and technological properties of titanium dioxide slips and slip castings demonstrated the presence of two castability regions. The properties of the slip and castings are optimal in the alkaline castability region (pH 8).

A study of the influence of the firing temperature of the titanium dioxide starting material on the properties of the slip and castings showed that the properties are optimal when the TiO2 had been fired at 1550° C.

An analysis of the sintering of titanium dioxide slip castings showed that the properties of the sintered castings are optimal when the castings were produced from slip with pH 8 because in this case the density of the castings is at maximum.

The strength of TiO2 castings in the sintering process depends on their porosity and that of the sintered castings on the size of the crystals.

Titanium dioxide fired at 1550°C yielded castings with open porosity 1.8–2.0%, apparent density 3.90–3.92 g/cm3, σb 1020–1050 kgf/cm2, acid resistance 97.5%, specific inductive capacitance 90–100, and tangent of the dielectric loss angle at 20°C and 1 MHz 8·10−4–9·10−4

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Authors and Affiliations

  1. Ukrainian Scientific-Research Institute of Refractories, Ukraine

    L. I. Verba & É. V. Degtyareva

Authors
  1. L. I. Verba
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  2. É. V. Degtyareva
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Translated from Ogneupory, No. 3, pp. 28–33, March, 1978.

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Verba, L.I., Degtyareva, É.V. Rheological and technological properties of titanium dioxide slips and the properties of the castings. Refractories 19, 158–163 (1978). https://doi.org/10.1007/BF01280470

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