Stress Relaxation in PZT.

Abstract

Time-dependent deformation in the sonar transducer ceramic, PZT, has been studied by stress relaxation techniques. Logarithmic stress relaxation was not observed but the data could be treated in terms of an analysis of thermally activated deformation due to Reed-Hill and Dahlberg. The room temperature activation energy and activation volume of the rate-controlling deformation mechanism were measured to be 25 kcal/mole and 7,000A, respectively. A dislocation model of the domain processes responsible for deformation is presented that is consistent with the experimental data.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1978
Accession Number
ADA062090

Entities

People

  • B. G. Koepke
  • K. A. Esaklul
  • W. W. Gerberich

Organizations

  • Honeywell International, Inc.

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Engineering
  • Curie Temperature
  • Engineering
  • Equations
  • Heat Of Activation
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Metallurgy
  • Military Research
  • New York
  • Physics Laboratories
  • Relaxation Time
  • Strain Rate
  • Time Dependence

Readers

  • Materials Science and Engineering.