Abstract
In this study, powder mixtures at atomic ratios suitable for formation of Sr(Ti0.2Y0.2Zr0.2Sn0.2Hf0.2)O3-x were flash sintered at 1000 °C and 40 mA/mm2. X-ray diffraction and energy-dispersive spectroscopy analyses revealed the formation of single-phase oxides after sintering for 1 min. This rapid formation of single-phase oxide was attributed to flash sintering characteristics, which not only enhanced the diffusion rate, but also softened the lattice. Compared to conventional heat treatment sintering, the sintering time was shortened to 1 min from 10 h, while the sample temperature was reduced to 1314 from 1500 °C. Therefore, flash sintering is a promising technique for rapid synthesis of high-entropy oxides.
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