VAPORIZATION OF TRANSITION METAL PHOSPHIDES
Studies were naade on the vaporization of the monophosphides of Mo, W, Nb, Ta, Ti, Zr, Hf, Pr, and U, as well as trithorium tetraphosphide and the thorium subphosphide. All of the phosphides but UP vaporized by decomposition into gaseous phosphorus and a condensed phase with lower phosphorus content. UP vaporized primarily by decomposition into gaseous U and P. From an investigation of the phosphorus dissociation pressures as a function of composition of the condensed phase, it was found that Th subphosphide and PrP exhibit at the temperature of investigation broad ranges of homogeneity LThP/sub 0.9/-0.7 and PrP/sub 1.0-0.9/) while BETA --ZrP and TiP appear to have small ranges of homogemeity. Data on partial molal enthalpies of P/sub 2/ dissociation at 2000 deg K are given. (P.C.H.)
- Research Organization:
- Pennsylvania State Univ., University Park
- NSA Number:
- NSA-18-008800
- OSTI ID:
- 4126825
- Report Number(s):
- TID-19990(Paper 3)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ENTHALPY
GASES
HAFNIUM COMPOUNDS
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM COMPOUNDS
NIOBIUM COMPOUNDS
PHOSPHORUS
PHOSPHORUS COMPOUNDS
PRASEODYMIUM COMPOUNDS
PRESSURE
QUANTITY RATIO
TANTALUM COMPOUNDS
THERMODYNAMICS
THORIUM COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION METALS
TUNGSTEN COMPOUNDS
URANIUM
URANIUM COMPOUNDS
VAPORS
ZIRCONIUM COMPOUNDS