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Abstract <p>The paper presents the results of a study of high-temperature oxidation in air of the metal-ceramic layered Ti<sub>3</sub>Al(Si)C<sub>2</sub>/Ta composites. The composites were made of preceramic papers filled with Ti<sub>3</sub>Al(Si)C<sub>2</sub> and metal foils (Ta) by spark plasma sintering. The sintering temperature was 1250°C, the holding time was 5 min, and the pressure was 50 MPa. The corrosion resistance of the laminated Ti<sub>3</sub>Al(Si)C<sub>2</sub>/Ta composites was estimated based on the results of high-temperature oxidation in air. The phase composition and microstructure of the oxide layers were analyzed by X-ray diffraction and scanning electron microscopy, respectively. It has been found that the Ti<sub>3</sub>Al(Si)C<sub>2</sub>/Ta composites demonstrate high oxidation resistance in the temperature range 800–1200°C due to the formation of a dense Al<sub>2</sub>O<sub>3</sub> layer on the outer surface of Ti<sub>3</sub>Al(Si)C<sub>2</sub>. With an increase in the oxidation temperature to 1300°C, a complex oxide layer is formed, consisting of an outer TiO<sub>2</sub>/SiO<sub>2</sub>/Al<sub>2</sub>TiO<sub>5</sub> layer and an inner TiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> oxide layer. The thickness of the TiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> oxide layers formed on the surface of the Ti<sub>3</sub>Al(Si)C<sub>2</sub>/Ta composite at oxidation temperatures up to 900°C is less than 1 μm, at a temperature of 1200°C the thickness of the oxide layers is 3.5 μm, and at 1300°C it is 56 μm.</p>

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High-Temperature Oxidation of Laminated Ta/Ti3Al(Si)C2 Composites in the Temperature Range 800–1300°C

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • E. B. Kashkarov,
  • N. S. Pushilina,
  • A. V. Abdulmenova,
  • E. P. Sedanova,
  • K. S. Gusev,
  • M. S. Syrtanov

摘要

Abstract

The paper presents the results of a study of high-temperature oxidation in air of the metal-ceramic layered Ti3Al(Si)C2/Ta composites. The composites were made of preceramic papers filled with Ti3Al(Si)C2 and metal foils (Ta) by spark plasma sintering. The sintering temperature was 1250°C, the holding time was 5 min, and the pressure was 50 MPa. The corrosion resistance of the laminated Ti3Al(Si)C2/Ta composites was estimated based on the results of high-temperature oxidation in air. The phase composition and microstructure of the oxide layers were analyzed by X-ray diffraction and scanning electron microscopy, respectively. It has been found that the Ti3Al(Si)C2/Ta composites demonstrate high oxidation resistance in the temperature range 800–1200°C due to the formation of a dense Al2O3 layer on the outer surface of Ti3Al(Si)C2. With an increase in the oxidation temperature to 1300°C, a complex oxide layer is formed, consisting of an outer TiO2/SiO2/Al2TiO5 layer and an inner TiO2/Al2O3 oxide layer. The thickness of the TiO2/Al2O3 oxide layers formed on the surface of the Ti3Al(Si)C2/Ta composite at oxidation temperatures up to 900°C is less than 1 μm, at a temperature of 1200°C the thickness of the oxide layers is 3.5 μm, and at 1300°C it is 56 μm.