DEVELOPMENT AND EVALUATION OF HOT ISOTATICALLY COMPACTED BORON nitride.

Abstract

Six commercial boron nitride powders were consolidated by hot isostatic compaction (HIC) into cylindrical test samples. Three conditions were employed for consolidation: 3000 F, 30,000 psi; 3600 F, 14,000 psi; and 4500 F, 15,000 psi. BN sample densities ranged up to 97.4 percent of theoretical. Maximum tensile strength (measured by diametral compression) reached 2700 psi. D-c electrical resistivity exhibits values in the 10 to the 14th power ohm/cm range and dielectric strength varied between 700 and 1200 volts/mil. Samples are now in preparation to obtain a-c electrical properties. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1970
Accession Number
AD0700976

Entities

People

  • D. E. Niesz
  • M. C. Brockway

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Ceramic Materials
  • Compression
  • Conductivity
  • Dielectric Properties
  • Dielectric Strength
  • Electrical Properties
  • Electricity
  • Physical Properties
  • Tensile Strength
  • Test And Evaluation

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials
  • Semiconductor Device Technology