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<p>This study presents a comparative investigation of the thermal stability and crystallization behavior of Fe₉₂Si₆C₂ and Fe₉₃Si₆C₁ amorphous ribbons. Differential Scanning Calorimetry (DSC) analysis revealed that the Fe₉₂Si₆C₂ ribbon exhibited higher crystallization onset (Tx ≈ 457&#xa0;°C) and peak (Tp ≈ 488&#xa0;°C) temperatures than Fe₉₃Si₆C₁. According to Thermogravimetric Analysis (TGA), the Fe₉₂Si₆C₂ sample also showed a delayed onset of mass loss (T<sub>onset</sub> ≈ 520&#xa0;°C) and a lower total mass loss (1.8%). A comparative assessment of both methods demonstrates that higher carbon content stabilizes the amorphous structure, suppressing crystallization and enhancing resistance to thermal oxidation. These results suggest that Fe₉₂Si₆C₂ ribbons are more suitable for use in high-temperature environments such as transformers, electromagnetic devices, and power conversion systems. The findings confirm that the thermal stability of amorphous materials can be effectively tuned by controlling their chemical composition.</p>

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Comparative Thermal Stability and Crystallization Behavior of Fe₉₂Si₆C₂ and Fe₉₃Si₆C₁ Amorphous Ribbons Investigated by DSC and TGA Analyses

  • 期刊论文

  • 发表日期：

    2025年11月30日

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  • Aida Isayeva,
  • Valik Ahmadov,
  • Nurlan Rafiyev

摘要

This study presents a comparative investigation of the thermal stability and crystallization behavior of Fe₉₂Si₆C₂ and Fe₉₃Si₆C₁ amorphous ribbons. Differential Scanning Calorimetry (DSC) analysis revealed that the Fe₉₂Si₆C₂ ribbon exhibited higher crystallization onset (Tx ≈ 457 °C) and peak (Tp ≈ 488 °C) temperatures than Fe₉₃Si₆C₁. According to Thermogravimetric Analysis (TGA), the Fe₉₂Si₆C₂ sample also showed a delayed onset of mass loss (Tonset ≈ 520 °C) and a lower total mass loss (1.8%). A comparative assessment of both methods demonstrates that higher carbon content stabilizes the amorphous structure, suppressing crystallization and enhancing resistance to thermal oxidation. These results suggest that Fe₉₂Si₆C₂ ribbons are more suitable for use in high-temperature environments such as transformers, electromagnetic devices, and power conversion systems. The findings confirm that the thermal stability of amorphous materials can be effectively tuned by controlling their chemical composition.