Thermal Effects on the Mechanical Properties of SiC Fiber Reinforced Reaction Bonded Silicon Nitride Matrix (SiC/RBSN) Composites

Abstract

The elevated temperature four-point flexural strength and the room temperature tensile and flexural strength properties after thermal shock were measured for ceramic composites consisting of 30 vol % uniaxially aligned 142 microns diameter SiC fibers in a reaction bonded Si3N4 matrix. The elevated temperature strengths were measured after 15 min of exposure in air at temperatures to 1400 C. The thermal shock treatment was accomplished by heating the composite in air for 15 min at temperatures to 1200 C and then quenching in water at 25 C. The results indicate no significant loss in strength properties either at temperature or after thermal shock when compared with the strength data for composites in the as-fabricated condition.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1988
Accession Number
ADA203119

Entities

People

  • R. E. Phillips
  • R. T. Bhatt

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ceramic Materials
  • Ceramic Matrix Composites
  • Composite Material Fabrication
  • Composite Materials
  • Failure Mode And Effect Analysis
  • Flexural Strength
  • Heat Transfer
  • Materials
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Modulus Of Elasticity
  • Shock Resistance
  • Stress Strain Relations
  • Stresses
  • Tensile Properties
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials