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Abstract <p>Xerogels and powders in the ZrO<sub>2</sub>−Y<sub>2</sub>O<sub>3</sub>−Yb<sub>2</sub>O<sub>3</sub> system are synthesized by coprecipitation of hydroxides in a laboratory setup and in a micro-vortex jet apparatus with counterswirling flows. The effects of the initial zirconium oxynitrate concentration and synthesis conditions on the physicochemical properties of the obtained materials are revealed. Ceramics based on <i>t</i>-ZrO<sub>2</sub> are obtained, exhibiting high microhardness, elastic modulus, and coefficients of linear thermal expansion (CLTE), which makes them promising for use as thermal insulation materials.</p>

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Thermal Insulation Materials Based on ZrO2–Y2O3–Yb2O3

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • N. Yu. Fedorenko,
  • O. L. Belousova,
  • Yu. S. Kudryashova,
  • A. M. Nikolaev,
  • V. L. Ugolkov,
  • T. V. Khamova,
  • A. S. Dolgin

摘要

Abstract

Xerogels and powders in the ZrO2−Y2O3−Yb2O3 system are synthesized by coprecipitation of hydroxides in a laboratory setup and in a micro-vortex jet apparatus with counterswirling flows. The effects of the initial zirconium oxynitrate concentration and synthesis conditions on the physicochemical properties of the obtained materials are revealed. Ceramics based on t-ZrO2 are obtained, exhibiting high microhardness, elastic modulus, and coefficients of linear thermal expansion (CLTE), which makes them promising for use as thermal insulation materials.