Rapid fabrication of oxygen-deficient zirconia by flash sintering treatment (IMAGE)

Tsinghua University Press

Rapid fabrication of oxygen-deficient zirconia by flash sintering treatment

Caption

Oxygen-deficient zirconia with black color was rapidly fabricated by flash sintering treatment in a short time of 90 s for the first time. Oxygen-deficient zirconia exhibited the excellent optical absorption capability compared to the white zirconia without flash treatment. Using EPR technique, the introduction of oxygen vacancies into zirconia bulks through flash sintering treatment was confirmed. After the flash sintering treatment, the direct band gap of zirconia was decreased from 4.18 to 2.09 eV, while the indirect band gap was decreased from 2.85 to 1.67 eV.

Credit

Journal of Advanced Ceramics, Tsinghua University Press

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CC BY

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