Improved IR Windows for Severe Aerothermal Environments

Abstract

This report details efforts to enhance the fabrication process for the production of transparent magnesium aluminate spinel domes. TA&T has evaluated a variety of spinel powders for pressureless sintering. The effects of powder blending and milling, cold isostatic pressing conditions, binder removal, sintering, and hot isostatic pressing on the final transparency of pressureless sintered parts have been determined. A working knowledge of the processing window has been established, allowing transparent spinel domes to be produced on a repetitive basis. This report details these investigations of the processing variables, and documents the successes of the Phase I effort.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 2004
Accession Number
ADA425711

Entities

People

  • Anthony Digiovanni

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Ceramic Materials
  • Fabrication
  • Grain Growth
  • Grain Size
  • Hot Pressing
  • Isostatic Pressing
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Optical Properties
  • Refractive Index
  • Silicon Carbide
  • Sintering

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Thin Film Deposition Science.