High optical quality Y2O3 transparent ceramics with fine grain size fabricated by low temperature air pre-sintering and post-HIP treatment

Zhongying Wang, Le Zhang, Hao Yang, Jian Zhang, Lixi Wang, Qitu Zhang

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

High optical quality Y2O3 transparent ceramics with fine grain size were successfully fabricated by air pre-sintering at various temperature ranging from 1500 to 1600 °C combined with a post-hot-isostatic pressing (HIP) treatment using co-precipitated powders as the starting material. The fully dense Y2O3 transparent ceramic with highest transparency was obtained by pre-sintered at 1550 °C for 4 h in air and post-HIPed at 1600 °C for 3 h (the pressure of HIP 200 MPa), and it had fine microstructure and the average grain size was 0.96 μm. In addition, the in-line transmittance of the ceramic reached 81.7% at 1064 nm (1 mm thickness). By this approach, the transparent Y2O3 ceramics with fine grain size (<1.6 μm) were elaborated without any sintering aid.

Original languageEnglish
Pages (from-to)4238-4245
Number of pages8
JournalCeramics International
Volume42
Issue number3
DOIs
StatePublished - 15 Feb 2016

Keywords

  • Air pre-sintering
  • Fine microstructure
  • High optical quality
  • Post-HIP treatment

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