INORGANIC DIELECTRICS RESEARCH

Abstract

Devitrified Ferroelectrics: Devitrified bodies made from C.P. grade flame-sprayed BaTiO3 were evaluated. The Curie temperature was shifted to higher temperatures depending upon thermal history. Under certain conditions the dielectric constant retained its higher value above the Curie temperature. Results were compared to those of C.P. solid phase reacted BaTiO3 bodies and capacitor grade devitrified bodies. Devitrified BaTiO3 bodies result in the formation of extremely small crystals as compared to the large ones of the solid phase reacted BaTiO3. Low loss BN ceramic dielectrics: A method for testing electrical properties under humidity conditions was developed. By use of surface resistance measurements it was indicated that the problem is one of a surface nature. Structural studies of polycrystalline ceramics: Metallization of micromodule substrates was compatible with thermal conditioning treatment. The 2 processes can be combined within a single operation to result in greatly strengthened substrates.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1962
Accession Number
AD0287173

Entities

People

  • C. J. Phillips
  • E. J. Smoke

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ceramic Materials
  • Contracts
  • Curie Temperature
  • Dielectric Permittivity
  • Dielectric Properties
  • Dielectrics
  • Electrical Properties
  • Heat Treatment
  • Materials
  • Materials Processing
  • Measurement
  • Particle Size
  • Physical Properties
  • Solid Phases
  • Transition Temperature
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Surface Engineering/Surface Coating Technology.
  • Thermal Physics or Thermal Science.