V. L. Ugolkov, Yu. S. Kudryashova, A. V. Osipov, L. P. Mezentseva, I. V. Makusheva, R. Sh. Abiev
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引用次数: 0
Abstract
The sol-gel synthesis of zircon, zirconium oxide, and composite powder precursors based on them has been performed in two ways: reverse precipitation and the microreactor method in a two-stage apparatus with intensively swirled reagent flows. A comparison of the synthesis results at all stages is carried out—(1 ‒ x)(H2SiO3‒ZrO(OH)2)‒xZrO(OH)2 precursor powders, after calcination at 850°С, as well as after sintering powders in the temperature range of 1000‒1300°С. The thermal behavior of the initial nanosized compositions is studied using differential scanning calorimetry and thermogravimetry and dilatometry methods. The temperature coefficients of linear expansion of ceramic samples are estimated. Microhardness values for the (1 – x)ZrSiO4–xZrO2 ceramic composites are given with different backgrounds.
期刊介绍：
Theoretical Foundations of Chemical Engineering is a comprehensive journal covering all aspects of theoretical and applied research in chemical engineering, including transport phenomena; surface phenomena; processes of mixture separation; theory and methods of chemical reactor design; combined processes and multifunctional reactors; hydromechanic, thermal, diffusion, and chemical processes and apparatus, membrane processes and reactors; biotechnology; dispersed systems; nanotechnologies; process intensification; information modeling and analysis; energy- and resource-saving processes; environmentally clean processes and technologies.
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