SINGLE CRYSTAL GROWTH OF THE GARNET TYPE OXIDES. PART II. PHASE RELATIONS IN THE TERNARY SYSTEM FE203-FE0-YFE03

Abstract

Equilibrium data are presented for the ternary system, Fe2O3-FeO-YFeO3, in ambient atmospheres of air, O, and CO2 at melting temperatures. The temperature range for the coexistence of Y-Fe garnet and oxide liquid decreases with decreasing O partial pressure from 127C in O to 86C in air to 20C in CO2. In addition, the composition of the garnet phase crystallizing from these melts changes with variations of temperature and O pressure. The experimental data are discussed in terms of a polythermal-polybaric model of the system. Some conclusions are drawn as to the limiting conditions in different atmospheres for the growth and the resulting composition of Y-Fe garnet crystals in equilibrium with ternary oxide liquids. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 09, 1961
Accession Number
AD0252397

Entities

People

  • H.j. Van Hook

Organizations

  • RTX

Tags

DTIC Thesaurus Topics

  • Atmospheres
  • Critical Temperature
  • Crystal Growth
  • Crystallization
  • Crystals
  • Experimental Data
  • Glass Transition Temperature
  • Partial Pressure
  • Single Crystals
  • Transition Temperature
  • Vapor Pressure

Readers

  • Combustion science or combustion engineering.
  • Materials Science and Engineering.
  • Theoretical Analysis.