Abstract
The vapor pressure of tungsten was measured by the Langmuir method in the temperature range 2574 to 3183 ?K using a vaccum microbalance. The least-squares line through the data, logP(atm) = 7.790 - 44680/T, yields a second law ?H?s(2850 ?K) = 204.4 ? 2.7 kcal/mol and ?S?s(2850 ?K) = 35.64 ? 0.97 cal/mol deg. Our recommended equation for the vapor pressure is logP(atm) = 7.933 - 45087/T based on our experimentally determined mean third law ?H?s(298 ?K) = 203.5 kcal/mol and tabulated values for the entropies and enthalpies.
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CITATION STYLE
Szwarc, R., Plante, E. R., & Diamond, J. J. (1965). Vapor pressure and heat of sublimation of tungsten. Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry, 69A(5), 417. https://doi.org/10.6028/jres.069a.044
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