Transparent Lu 3NbO 7 bodies prepared by reactive spark plasma sintering and their optical and mechanical properties

Liqiong An, Akihiko Ito, Takashi Goto

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Transparent lutetium niobate (Lu 3NbO 7) bodies were prepared by reactive spark plasma sintering using Lu 2O 3 and Nb 2O 5 powders. Fully dense Lu 3NbO 7 bodies with density greater than 99.5% of the theoretical were obtained at 1300-1650 °C. The grains steadily grew from 0.1 to 0.6 μm with increasing sintering temperature from 1200 to 1450 °C and significant grain growth from 2.2 to 9.2 μm occurred at 1550-1650 °C. The Lu 3NbO 7 body sintered at 1450 °C showed the highest transmittance of 63% at 550 nm after heat treatment at 850 °C in air for 6 h. Fully dense, submicron-size transparent Lu 3NbO 7 exhibited Vickers hardness of ∼13.0 GPa and indentation fracture toughness of 1.0 MPa m 1/2.

本文言語English
ページ(範囲)383-387
ページ数5
ジャーナルCeramics International
39
1
DOI
出版ステータスPublished - 2013 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • プロセス化学およびプロセス工学
  • 表面、皮膜および薄膜
  • 材料化学

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