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<p>Using the method of microwave reactive sintering, we obtained Ce:YAG–Al<sub>2</sub>O<sub>3</sub> ceramic composite samples with a density of about 95% of the theoretical value and exhibiting luminescent properties. It was established that during the microwave heating, the temperatures of phase transformations in both the Y–Al–O system and aluminum oxide decrease by 250–400°C (depending on the intensity of the microwave electromagnetic field in the sample) compared to conventional furnace heating. This indicates a significant effect of the microwave electromagnetic field on diffusion transport and nucleation processes in the solid-state chemical reactions leading to the formation of yttrium–aluminum garnet.</p>

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Peculiarities of Phase Transformations During Microwave Reactive Sintering of Ce:YAG–Al2O3 Composites

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • S. V. Egorov,
  • A. G. Eremeev,
  • K. I. Rybakov,
  • A. A. Sorokin,
  • V. V. Kholoptsev,
  • S. S.Balabanov,
  • T. O. Evstropov

摘要

Using the method of microwave reactive sintering, we obtained Ce:YAG–Al2O3 ceramic composite samples with a density of about 95% of the theoretical value and exhibiting luminescent properties. It was established that during the microwave heating, the temperatures of phase transformations in both the Y–Al–O system and aluminum oxide decrease by 250–400°C (depending on the intensity of the microwave electromagnetic field in the sample) compared to conventional furnace heating. This indicates a significant effect of the microwave electromagnetic field on diffusion transport and nucleation processes in the solid-state chemical reactions leading to the formation of yttrium–aluminum garnet.