The composition and temperature dependence of the partial molar enthalpy of hydroge in niobium

1975 ◽  
Vol 9 (6) ◽  
pp. xxvii
Author(s):  
R. Burch ◽  
N.B. Francis
Keyword(s):  
Temperature Dependence ◽  
Molar Enthalpy ◽  
Partial Molar Enthalpy

Heat Capacity and Thermodynamic Properties of LaBr3 at 300 – 1100 K

2004 ◽  
Vol 59 (11) ◽  
pp. 825-828
Author(s):  
L. Rycerz ◽  
E. Ingier-Stocka ◽  
B. Ziolek ◽  
S. Gadzuric ◽  
M. Gaune-Escard
Keyword(s):  
Differential Scanning Calorimetry ◽  
Heat Capacity ◽  
Thermodynamic Properties ◽  
Temperature Dependence ◽  
Enthalpy Of Formation ◽  
Thermodynamic Functions ◽  
Molar Enthalpy ◽  
Standard Molar Enthalpy ◽  
Scanning Calorimetry ◽  
Temperature Range

The heat capacity of solid and liquid LaBr3 was measured by Differential Scanning Calorimetry (DSC) in the temperature range 300 - 1100 K. The obtained results were fitted by a polynomial temperature dependence. The enthalpy of fusion of LaBr3 was also measured. By combination of these results with the literature data on the entropy, S0m (LaBr3, s, 298.15 K) and the standard molar enthalpy of formation, ΔformH0m (LaBr3, s, 298.15 K), the thermodynamic functions of lanthanum tribromide were calculated up to 1300 K

Dilute Solution of H in bcc Ti35Cr65-xVx Alloys

2007 ◽  
Vol 1042 ◽  
Author(s):  
Giovanni Mazzolai
Keyword(s):  
Configurational Entropy ◽  
Molar Enthalpy ◽  
Partial Molar Enthalpy ◽  
Solution Phase ◽  
Solid Solution Phase ◽  
Dilute Solution ◽  
Α Phase ◽  
Image Position ◽  
Temperature Surface ◽  
Gas Pressures

AbstractThe solubility of H in the solid solution phase of the Ti35Cr47V18 alloy has been investigated at high and low temperature. The Sieverts law has been found to hold for 808 K≤T≤1204 K and fail for 302 K≤T≤335 K. For H contents nH ≤0.07 (nH=H/Me) the partial molar enthalpy and partial non-configurational entropy at high temperature are:On heating the material under H2 gas pressures lower than 0.1 MPa H absorption only occurs above 700 K. Below this temperature, surface oxide films prevent H uptake. Thermal decomposition spectroscopy of the α phase carried out for nH≤0.24 exhibits a single peak whose temperature increases with decreasing nH owing to selective occupancy by H of energetically non-degenerate interstitial sites.

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