Basic Research on Processing of Ceramics for Space Structures

Abstract

The hydrolysis of alkoxide emulsion droplets was investigated for preparing un-agglomerated, submicrometer oxide ceramic particles with a homogeneous composition. This technique was used to prepare single- and mixed- oxide powders whose overall cation composition corresponded to the initial alkoxide cation composition. Uncalcined powders were amorphous, with high surface areas and low densities; upon calcination, powders densified and became crystalline. In other studies, a water-in-oil emulsion technique was investigated for preparing SrTiO3, and two AIN precursors were synthesized from dimethylaminoalane and NH3 . Both AIN precursors gave fine, high purity AIN powders after heat-treatment a colloidally pressed sample densified to 95% of theoretical density at 1750 C. Ceramics, Composite ceramics, Cyclic annealing, Organosilicon polymeric binders, Polymer-coated SiC.

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Document Details

Document Type
Technical Report
Publication Date
Jan 31, 1989
Accession Number
ADA205954

Entities

People

  • B. A. Bishop
  • H. R. Bowen
  • S. Kamiya
  • W. C. Moffatt
  • W. E. Rhine

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Ceramic Materials
  • Chemical Analysis
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Material Degradation Processes
  • Materials
  • Materials Engineering
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Organic Chemistry
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Organic Chemistry
  • Surface Coatings Technology.

Technology Areas

  • Space