High Temperature Evaluation of New Ferroelastic Toughened Ceramic Materials

Abstract

The toughness behavior of ceria tetragonal zirconia polycrystalline (TZP) ceramics was investigated relative to the effect of various dopants (coded as dopants A, B and C in this report due to pending patent applications). Additions of dopant A enhanced the toughness of zirconia ceramics, dopant B suppressed the fracture toughness and , dopant C had little effect on toughness. High temperature strength retention in zirconia ceramics containing dopant A suggest that mechanisms other than transformation toughening are operative. Switching of x-ray peak intensities showed that the tetragonal zirconia used in the present study os ferroelastic.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1988
Accession Number
ADA203197

Entities

People

  • Robert J. Mayhew
  • Roger L. Matsumoto

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Cantilever Beams
  • Ceramic Materials
  • Chemistry
  • Curie Temperature
  • Diffraction
  • Diffraction Analysis
  • Electron Microscopes
  • Fabrication
  • Flexural Strength
  • High Temperature
  • Materials
  • Materials Science
  • Mechanical Properties
  • Microscopes
  • Toughness
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.