DISLOCATIONS AND THE TENSILE STRENGTH OF POLYCRYSTALLINE MAGNESIUM OXIDE

Abstract

The tensile strength of polycrystalline magnesia can be high (approximately 30,000 psi) providing there are no fresh or mobile dislocations present. These dislocations may originate in one of two ways. In the first, they may be introduced directly by mechanical contact with the surface. In the second, they may be generated indirectly through the stress concentrations associated with pores. To attain tensile strengths higher than 10-15,000 psi it is necessary to use fully dense pore free material whose surface has been chemically polished or otherwise protected from mechanical contact.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1963
Accession Number
AD0297058

Entities

People

  • C.h. Li
  • R.j. Stokes

Organizations

  • Honeywell International, Inc.

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Ceramic Materials
  • Crystal Structure
  • Grain Boundaries
  • Heat Treatment
  • Magnesium Compounds
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Mechanical Working
  • Metallurgy
  • Microstructure
  • New York
  • Solid State Physics
  • Surface Properties
  • Tensile Strength

Readers

  • Materials Science (Mechanical Engineering).
  • Surface Engineering/Surface Coating Technology.
  • Theoretical Analysis.