Accession Number:
AD0252397
Title:
SINGLE CRYSTAL GROWTH OF THE GARNET TYPE OXIDES. PART II. PHASE RELATIONS IN THE TERNARY SYSTEM FE203-FE0-YFE03
Descriptive Note:
Corporate Author:
RAYTHEON CO WALTHAM MA
Personal Author(s):
Report Date:
1961-01-09
Pagination or Media Count:
1.0
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