Two-step pressure sintering of transparent lutetium oxide by spark plasma sintering

Liqiong An, Akihiko Ito, Takashi Goto

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


Transparent lutetium oxide (Lu2O3) body was prepared by spark plasma sintering using a two-step pressure profile combined with a low heating rate. The effects of pre-load pressures from 10 to 100MPa and heating rates from 0.03 to 1.67Ks-1 on the microstructures and optical properties were investigated. With increasing pre-load pressures from 10 to 100MPa, the grains became smaller with a narrower distribution, whereas the transmittance showed maxima at 30MPa. The average grain size slightly increased from 0.67 to 0.86μm as the heating rate increased from 0.03 to 1.67Ks-1, while the transmittance decreased. Transmittances of 60% at 550nm and 79% at 2000nm were obtained under a pre-load pressure of 30MPa at a heating rate of 0.17Ks-1.

Original languageEnglish
Pages (from-to)1597-1602
Number of pages6
JournalJournal of the European Ceramic Society
Issue number9
Publication statusPublished - 2011 Aug


  • LuO
  • Lutetium oxide
  • Spark plasma sintering
  • Transparent

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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