Formation of an Oxygen-Deficient Y2O3 Phase Under High Pressure

Abstract

Formation of an Oxygen-Deficient Y2O3 Phase Under High Pressure: Polycrystalline Y2O3 is the material of choice for IR applications since it has excellent optical properties in the visible, and near infra-red band. Current processing methods yield polycrystalline Y2O3 with large grain size (>100 microns), which limits the hardness and erosion resistance attainable. One way to improve strength is to develop an ultra-fine grained material with acceptable optical transmission properties. It has been found recently that reversible transformation in consolidated Y2O3 under high pressure and temperature materials led to an extraordinary reduction in grain size . Holding consolidated Y2O3 material under high pressure and temperature also yielded a novel surface structural modification.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2010
Accession Number
ADA527007

Entities

People

  • Jafar F. Al-sharab

Organizations

  • Rutgers University–New Brunswick

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Ceramic Materials
  • Diffraction Analysis
  • Electron Diffraction
  • Erosion Resistance
  • Fine Grained Materials
  • Grain Size
  • Graphitic Materials
  • Hardness
  • High Pressure
  • High Temperature
  • Materials
  • Nanomaterials
  • Optical Properties
  • Oxygen
  • Phase
  • Phase Transformations
  • Polycrystals

Fields of Study

  • Materials science

Readers

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