Accession Number:

AD0648525

Title:

THE THERMODYNAMICS OF THE CALCIA/CALCIUM-OXYGEN VAPOR SYSTEM,

Descriptive Note:

Corporate Author:

RAND CORP SANTA MONICA CALIF

Personal Author(s):

• Krieger,F. J.

Report Date:

1967-01-01

Pagination or Media Count:

36.0

Abstract:

The purpose of the study is the thermodynamic investigation of calcia, CaO, over a range of temperatures up to 6000K and pressures up to 1000 atmospheres. Two sets of equilibrium composition equations are used--one representing a pure gas phase, the other a heterogeneous system of gas and condensed i.e., solid or liquid calcia. The gas phase of the heterogeneous chemical system, like the homogeneous gas phase, comprises 9 gaseous calcium-oxygen species. The results of the computational program are presented in both tabular and graphic form. The latter is a conventional Mollier diagram in which specific enthalpy is plotted against specific entropy, with cross plots of temperature, pressure, and molecular weight or moles of condensed calcia. Author

Descriptors:

• (*ABLATION
• THERMODYNAMICS)
• (*CALCIUM OXIDES
• THERMODYNAMICS)
• (*CALCIUM
• THERMODYNAMICS)
• (*OXYGEN
• THERMODYNAMICS)
• PHASE STUDIES
• CHEMICAL EQUILIBRIUM
• CERAMIC MATERIALS
• VAPORS
• ENTROPY
• ENTHALPY
• TABLES(DATA)
• DIAGRAMS
• TEMPERATURE
• PRESSURE
• MOLECULAR WEIGHT
• REENTRY VEHICLES

Subject Categories:

• Ceramics, Refractories and Glass
• Atomic and Molecular Physics and Spectroscopy
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE