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<p>α–Al<sub>2</sub>O<sub>3</sub>–3YSZ porous ceramics were fabricated using the slip casting method with the incorporation of 15 wt% of submicron Al<sub>2</sub>O<sub>3</sub> powders as sintering additives. The materials were prepared by solution combustion synthesis using glycine or urea as fuels. Following firing of the ceramics at 1550°C, the percentage of closed porosity was found to be in the range from 14.1 to 24.0%. The experimental results revealed a linear correlation between density and closed porosity of Al<sub>2</sub>O<sub>3</sub>–3YSZ corundum ceramics. Ceramic samples that underwent firing at 1550°C exhibited relative density values ranging from 75 to 85%, accompanied by an open porosity of 0.90 to 1.71%. The findings indicate that the morphology of the used aluminum oxide additives synthesized through combustion exerts a predominant influence on the strength characteristics.</p>

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Production of α–Al2O3–3YSZ Porous Ceramics with α(γ)–Al2O3 Additive

  • 期刊论文

  • 发表日期：

    2025年1月11日

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  • Yu. I. Komolikov,
  • L. V. Ermakova,
  • R. A. Shishkin,
  • V. M. Skachkov,
  • V. D. Zhuravlev

摘要

α–Al2O3–3YSZ porous ceramics were fabricated using the slip casting method with the incorporation of 15 wt% of submicron Al2O3 powders as sintering additives. The materials were prepared by solution combustion synthesis using glycine or urea as fuels. Following firing of the ceramics at 1550°C, the percentage of closed porosity was found to be in the range from 14.1 to 24.0%. The experimental results revealed a linear correlation between density and closed porosity of Al2O3–3YSZ corundum ceramics. Ceramic samples that underwent firing at 1550°C exhibited relative density values ranging from 75 to 85%, accompanied by an open porosity of 0.90 to 1.71%. The findings indicate that the morphology of the used aluminum oxide additives synthesized through combustion exerts a predominant influence on the strength characteristics.