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<p>The influence of the composition of nickel oxide–gadolinium doped ceria (NiO-GDC) on the onset conditions for flash sintering was investigated. The lowest flash onset temperature was achieved for 50:50 wt.% of NiO:GDC in the three electric fields applied (50, 70, and 100V/cm) and laid between 126 and 195&#xa0;°C, which was slightly lower than pure NiO and much lower than GDC. The results obtained were differed from those reported in the literature, where the flash onset temperature in a ceramic composite system reached the lowest value for the pure and most conductive phase. The electrical properties and microstructure of NiO-GDC are discussed as responsible for the discrepancy.</p>

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Investigation of flash sintering effects on the NiO-GDC nanocomposites synthesized by one-step method

  • 期刊论文

  • 发表日期：

    2025年8月6日

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  • J. Usuba,
  • C. Salvo,
  • J. Durango,
  • F. Sanhueza,
  • A. F. Jaramillo,
  • A. Arulraj,
  • R. V. Mangalaraja

摘要

The influence of the composition of nickel oxide–gadolinium doped ceria (NiO-GDC) on the onset conditions for flash sintering was investigated. The lowest flash onset temperature was achieved for 50:50 wt.% of NiO:GDC in the three electric fields applied (50, 70, and 100V/cm) and laid between 126 and 195 °C, which was slightly lower than pure NiO and much lower than GDC. The results obtained were differed from those reported in the literature, where the flash onset temperature in a ceramic composite system reached the lowest value for the pure and most conductive phase. The electrical properties and microstructure of NiO-GDC are discussed as responsible for the discrepancy.