Low Temperature Degradation of Y-TZP Materials

Abstract

Seven yttria-tetragonal zirconia polycrystal materials were examined to determine if they were susceptible to low temperature degradation. Flexure specimens were exposed to approx 800 Pa of water vapor pressure for 50 hours between 200 deg C and 400 deg C. Only one of the TZPs was unaffected by these low temperature treatments; three underwent catastrophic degradation after all the low temperature treatments, while the final three had property losses to various degrees depending on the treatment temperature.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1990
Accession Number
ADA219210

Entities

People

  • Jeffrey J. Swab

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Advanced Materials
  • Air Force
  • Elastic Properties
  • Energy
  • Engineering
  • Grain Size
  • Heat Energy
  • Heat Engines
  • Heat Treatment
  • Low Temperature
  • Materials
  • Materials Science
  • Mechanical Properties
  • Military Research
  • Modulus Of Elasticity
  • Toughness
  • Vapor Pressure

Readers

  • Mathematics or Statistics
  • Powder metallurgy of Titanium alloys.
  • Thermal Physics or Thermal Science.