Accession Number : AD0706886

Title :   THE THERMODYNAMICS OF THE ZIRCONIUM NITRIDE/ZIRCONIUM-NITROGEN VAPOR SYSTEM,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : Krieger,F. J.

Report Date : APR 1970

Pagination or Media Count : 36

Abstract : The study considers zirconium nitride over a range of temperatures up to 6000 deg K and pressures up to 100 atmospheres. Two sets of equilibrium composition equations are used--one representing a pure gas phase, the other a heterogeneous system of gas and condensed solid or liquid ZrN. The gas phase of the heterogeneous chemical system, like the homogeneous gas phase, comprises eight gaseous zirconium-nitrogen species. Computational results are presented in both graphic and tabular form. The former 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 ZrN. (Author)

Descriptors :   (*NITRIDES, ABLATION), (*ZIRCONIUM COMPOUNDS, ABLATION), VAPORIZATION, THERMODYNAMICS, REFRACTORY MATERIALS, PHASE STUDIES, ZIRCONIUM, NITROGEN

Subject Categories : Physical Chemistry
      Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE