Effect of calcination temperature on the fabrication of transparent lutetium titanate by spark plasma sintering

Liqiong An, Akihiko Ito, Takashi Goto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Transparent lutetium titanate (Lu 2Ti 2O 7) bodies were fabricated by spark plasma sintering using Lu 2O 3 and TiO 2 powders calcined from 700°C to 1200°C. No solid-state reaction was identified after calcination at 700°C, whereas single-phase Lu 2Ti 2O 7 powder was prepared at 1100 and 1200°C. The calcination at 700°C promoted densification at the early stages of sintering, whereas residual pores at grain boundaries resulted in Lu 2Ti 2O 7 bodies with low transparency. Low-density and opaque Lu 2Ti 2O 7 bodies formed owing to the coarsening of the powder calcined at 1200°C. The Lu 2Ti 2O 7 body sintered using the powder calcined at the moderate temperature of 1100°C had a density of 99.5% with the highest transmittances of 41% and 74% at wavelengths of 550 nm and 2000 nm, respectively.

Original languageEnglish
Pages (from-to)4973-4977
Number of pages5
JournalCeramics International
Volume38
Issue number6
DOIs
Publication statusPublished - 2012 Aug

Keywords

  • A. Sintering
  • B. Microstructure-final
  • Transparent ceramics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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