Effect of Whisker Orientation on the Mechanical Properties of Silicon Carbide/Alumina Composites

Abstract

Silicon carbide (whisker) and alumina composites were processed with and without concurrent application of an external electric field in order to orient the whiskers in the composites. Both the flexural strength and the fracture toughness of the composites were measured. The results suggest that the application of electric field improves the whisker orientation of the sintered composites. However, the improvement in the improvement in the mechanical properties of the composites due to the orientation of the dispersed whiskers is not very significant ( 9-12%). Samples processed from flocculated suspensions produce poorly dispersed microstructure.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1992
Accession Number
ADA248737

Entities

People

  • A. S. Rao

Organizations

  • Naval Surface Warfare Center Carderock Division

Tags

DTIC Thesaurus Topics

  • Biocomposites
  • Carbides
  • Ceramic Matrix Composites
  • Composite Materials
  • Compound Semiconductors
  • Electric Fields
  • Flexural Strength
  • Materials
  • Materials Engineering
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Schematic Diagrams
  • Silicon
  • Silicon Carbide

Fields of Study

  • Materials science

Readers

  • Aerosol Science/Aerosol Physics
  • Structural Health Monitoring of Composite Structures.
  • Thin Film Deposition Science.