ORIENTED EUTECTIC MICROSTRUCTURES IN THE SYSTEM Al2O3/ZrO2

Abstract

Oriented eutectic microstructures have been produced in the system Al2O3/ZrO2 using a Bridgman-type crystal-growing furnace. Ingots consisted of elongated columnar grains or colonies. Inside the colonies a rod-type eutectic microstructure consisting of rods of ZrO2 surrounded by an Al2O3 matrix was observed. The eutectic point was re-established at 63 mo1% Al2O3/37.0 mo1% ZrO2 and 1870C. Al203 is the first phase to nucleate when eutectic growth occurs.

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Document Details

Document Type
Technical Report
Publication Date
Mar 02, 1970
Accession Number
AD0713336

Entities

People

  • Dennis J. Viechnicki
  • Frederick Schmid

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Aluminum Oxides
  • Ceramic Materials
  • Ceramic Matrix Composites
  • Classification
  • Composite Materials
  • Crystals
  • Eutectics
  • Materials
  • Materials Science
  • Mechanics
  • Metals
  • Microstructure
  • Oxides
  • Phase
  • Phase Diagrams
  • Security
  • Temperature Gradients

Fields of Study

  • Materials science

Readers

  • Combustion and Flow Dynamics.
  • Materials Science and Engineering.
  • Metallurgy