Studies have been made on the effects of mechanochemical activation with the addition of surfactants on the characteristics of the pneumocirculation grinding product from alumina powder and the properties of the corundum ceramic based on it. Processing the powder in an aqueous solution of polyvinyl alcohol and methyl cellulose with concentration up to 1% has a marked effect on the detailed crystal structure of the particles and improves the technological properties of the powder. Activation produces defects at the particle surfaces, which tend to intensify the consolidation of the powder up to high sintering temperatures.
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Translated from Novye Ogneupory, No. 6, pp. 29 – 33, June, 2009.
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Antsiferova, I.V., Kul’met’eva, V.B. & Biryukov, Y.A. Surfactant effects in the mechanical activation of ultrafine alumina powders made by pneumocirculation grinding. Refract Ind Ceram 50, 227–230 (2009). https://doi.org/10.1007/s11148-009-9183-y
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DOI: https://doi.org/10.1007/s11148-009-9183-y