Effect of ZnO and TiO 2 doping on the sintering behavior of Y 2 O 3 ceramics

Changhun Kim, Doyun Lee, Jung A. Lee, Joon Hyung Lee, Young Woo Heo, Jeong Joo Kim

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8 Scopus citations

Abstract

Full densification of Y 2 O 3 is challenging and requires a very high sintering temperature (above 1700 °C). In this study, the effect of ZnO and TiO 2 dopants on its densification was investigated, showing that both dopants lowered the sintering temperature and improved the process. Moreover, ZnO promoted the grain growth, while TiO 2 inhibited it; hence, the ZnO[sbnd]TiO 2 co-doping and the change in the ZnO/TiO 2 ratio allowed the control of the sintered body microstructure while maintaining high densification. Since Y 2 O 3 has a higher plasma erosion resistance than conventional Si-based materials, the plasma dry etching resistance of the sintered Y 2 O 3 was also evaluated and found superior due to the improved densification and controlled grain size of the doped samples.

Original languageEnglish
Pages (from-to)13315-13318
Number of pages4
JournalCeramics International
Volume45
Issue number10
DOIs
StatePublished - Jul 2019

Keywords

  • Doping
  • Plasma etching resistance
  • Sintering
  • Y O

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