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<p>A calcium zirconate crucible material with excellent performance was prepared by fixing the particle size proportion and exploring the addition of Y<sub>2</sub>O<sub>3</sub>. The results show that Y<sup>3+</sup> solid-dissolves into c-ZrO<sub>2</sub> to occupy the Zr<sup>4+</sup> positions, leading to structural defects and promoting the sintering of calcium zirconate. Adding 0.5 wt.% Y<sub>2</sub>O<sub>3</sub> into calcium zirconate can enhance the modulus of rupture, reduce the thermal expansion coefficient, and improve the thermal shock resistance. Through high-temperature test, it is found that adding 0.5 wt.% Y<sub>2</sub>O<sub>3</sub> significantly improves the corrosion resistance of the sample.</p>

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Preparation of a CaZrO3 crucible material and its corrosion resistance to nickel-based high-temperature alloys

  • 期刊论文

  • 发表日期：

    2026年2月10日

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  • Wen-Gang Yang,
  • Hong-Xia Li,
  • Yue Lu,
  • Ling-Yan Yu,
  • Qiang Gu,
  • Fan Qian,
  • Guo-Qi Liu

摘要

A calcium zirconate crucible material with excellent performance was prepared by fixing the particle size proportion and exploring the addition of Y2O3. The results show that Y3+ solid-dissolves into c-ZrO2 to occupy the Zr4+ positions, leading to structural defects and promoting the sintering of calcium zirconate. Adding 0.5 wt.% Y2O3 into calcium zirconate can enhance the modulus of rupture, reduce the thermal expansion coefficient, and improve the thermal shock resistance. Through high-temperature test, it is found that adding 0.5 wt.% Y2O3 significantly improves the corrosion resistance of the sample.