The possibility is demonstrated of preparing porous ceramic based on zirconium dioxide micro- and nanopowder using crystallization of carbamide in a suspension. Different suspension cooling regimes are studied for oxide powders (in air, in a freezing chamber, in snow). It is shown that sintered ceramic porosity and pore size depend directly on suspension composition and cooling method. As a result of this ceramic is prepared with porosity of 30 – 60% with pore diameter of 0.2 – 200 μm.
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Translated from Novye Ogneupory, No. 9, pp. 33 – 38, September, 2016.
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Kamyshnaya, K.S., Khabas, T.A. Study of Preparation of Prescribed Pore Configuration in Zirconium Dioxide Ceramic Due to Carbamide Directional Solidification. Refract Ind Ceram 57, 490–495 (2017). https://doi.org/10.1007/s11148-017-0010-6
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DOI: https://doi.org/10.1007/s11148-017-0010-6