Property Screening and Evaluation of Ceramic Turbine Engine Materials

Abstract

An overview is presented of the pertinent thermal and mechanical properties of 26 structural silicon-base non-oxide ceramics that are candidates for advanced heat engine applications. Included are hot pressed, sintered and reaction sintered Si3N4 and SiC, and Silicon. Data are presented for flexure strength, elastic properties, strength degradation at long times due to subcritical crack growth, long term oxidation effects, creep resistance, fracture toughness, thermal expansion, thermal diffusivity, and thermal shock resistance. All materials are evaluated using the same test equipment so that valid comparisons can be made between materials. Emphasis is placed on predominant behavioral trends as related to material microstructure and purity, as determined by processing method. Structure-property relations are developed.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1979
Accession Number
ADA080963

Entities

People

  • D. C. Larsen

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Ceramic Materials
  • Crystal Structure
  • Gas Turbines
  • Heat Transfer
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Modulus Of Elasticity
  • Plastic Explosives
  • Silicon Carbide
  • Thermal Conductivity
  • Turbine Components

Fields of Study

  • Materials science

Readers

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  • Systems Analysis and Design