Characterization of Silicon Nitride Using 14 MeV Neutrons

Abstract

There is special interest in the ceramic Si3N4 because it is a light- weight material having high-temperature oxidation and corrosion resistance, thermal shock resistance, and strength at both high and low temperatures. Such a material is needed for application in high temperature gas turbines. Experimental techniques required to prepare samples of Si3N4 for analysis and the preparation of both low-oxygen-containing-nickel and polystyrene holders for these samples and their respective standards are described. Results are presented for total oxygen content of both hot-pressed and reaction-bonded Si3N4 subjected to oxidation at 2200 F, characterization of amorphous silicon nitride, the oxygen content of alpha silicon nitride, and the silicon-oxygen analysis of various other Si3N4 samples.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1975
Accession Number
ADA033690

Entities

People

  • Forrest C. Burns
  • Grace L. Priest
  • Homer F. Priest

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Analytical Chemistry
  • Ceramic Materials
  • Corrosion Resistance
  • Dielectric Polymers
  • Gas Turbines
  • High Temperature
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Materials Science
  • Neutron Activation
  • Oxidation
  • Polystyrenes
  • Resistance
  • Shock Resistance
  • Thermal Shock
  • Turbines

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Reinforced Composite Materials
  • Semiconductor Device Technology