Hardening and Toughening of ZnS-Ga2S3 Ceramics by Solid-State Reactions

Abstract

We report here the first results of our research on the hardness and toughness of ZnS containing 16 mol % Ga2S3, which is the eutectoid composition. Hot-pressed material of 97 to 99% of theoretical was heat-treated for various times in the temperature range 700 to 790 C to stimulate eutectoid decomposition below th eutectoid temperature (818 C). Hardness and toughness were evaluated by the indentation method. The heat-treated material is significantly harder than pure ZnS, but the fracture toughness is about the same, although there is some evidence that toughness increases at longer reaction times. (JES)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1989
Accession Number
ADA213875

Entities

People

  • A. J. Ardell
  • Bruce S. Dunn
  • Jinlun Zhang
  • W. W. Chen

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • California
  • Engineering
  • Equations
  • Hardening
  • Hardness
  • Heat Treatment
  • Hot Pressing
  • Materials
  • Materials Science
  • Mechanical Properties
  • Military Research
  • Optical Properties
  • Phase Diagrams
  • United States
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Materials Science (Mechanical Engineering).
  • Surface Engineering/Surface Coating Technology.