Effect of annealing on microstructure and luminescence characteristics in spark plasma sintered Ce3+-activated (Gd, Lu)3Al5O12 garnet ceramics

Ji Hwoan Lee, Ji Guang Li, Byung Nam Kim, Qinghong Meng, Xudong Sun, Byung Koog Jang

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)

抄録

In the case of spark plasma sintered (SPSed) oxides, it is known that carbon contamination and oxygen vacancies are introduced during the sintering process due to the SPS characteristic of a carbon-rich environment. The introduction of carbon contamination and oxygen vacancies had a direct effect on the transmittance, and the annealing process mostly recovered the low transmittance of sintered bodies. It also affected the luminescence characteristics. The luminescence intensity of sintered bodies, which was very low due to carbon contamination and oxygen vacancies, could be dramatically improved through the annealing process. In the specimens with longer holding times during SPS, the grain size was increased, and the porosity was also significantly reduced, resulting in higher intensity improvements. Through the SPS process, the sintered body was effectively densified, and the annealing could compensate for the drawback of SPS and enable better luminescence properties.

本文言語英語
ページ(範囲)1586-1592
ページ数7
ジャーナルJournal of the European Ceramic Society
41
2
DOI
出版ステータス出版済み - 2月 2021

!!!All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 材料化学

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