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<p>High thermal resistance of ZrB<sub>2</sub>–SiC composite ceramics makes it a&#xa0;promising candidate for creating heat-protective structures operating at temperatures exceeding 2000 °C. A&#xa0;significant advantage of ZrB<sub>2</sub>–SiC composite ceramics is self-healing of defects under cyclic temperature effects. The paper investigates self-healing of artificial defects on the surface of ZrB<sub>2</sub>–SiC composite ceramics at 1200, 1400 and 1600 °C annealing. It is shown that the most efficient self-healing process occurs after 1600 °C annealing. It is found that defect self-healing increases due to the higher temperature and increased SiC content in composite ceramics.</p>

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Effect of ZrB2-SiC ceramics composition on defect self-healing

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • A. G. Burlachenko,
  • Yu. A. Mirovoy,
  • S. P. Buyakova

摘要

High thermal resistance of ZrB2–SiC composite ceramics makes it a promising candidate for creating heat-protective structures operating at temperatures exceeding 2000 °C. A significant advantage of ZrB2–SiC composite ceramics is self-healing of defects under cyclic temperature effects. The paper investigates self-healing of artificial defects on the surface of ZrB2–SiC composite ceramics at 1200, 1400 and 1600 °C annealing. It is shown that the most efficient self-healing process occurs after 1600 °C annealing. It is found that defect self-healing increases due to the higher temperature and increased SiC content in composite ceramics.