Temperature and composition dependences of the heat of mixing of MBBA with hydrocarbon

1980 ◽  
Vol 9 (10) ◽  
pp. 771-784 ◽  
Author(s):  
Melvin D. Croucher ◽  
Donald Patterson
Keyword(s):  
Heat Of Mixing

Heat of Mixing ofHe3inHe4

1953 ◽  
Vol 92 (6) ◽  
pp. 1345-1346 ◽  
Author(s):  
H. S. Sommers ◽  
W. E. Keller ◽  
J. G. Dash
Keyword(s):  
Heat Of Mixing

Isothermal Calorimeter and the Heat of Mixing of Iso‐Octane‐Perfluoroheptane Solutions

1956 ◽  
Vol 25 (6) ◽  
pp. 1166-1170 ◽  
Author(s):  
Charles R. Mueller ◽  
James E. Lewis
Keyword(s):  
Heat Of Mixing ◽  
Isothermal Calorimeter

scholarly journals Thermodynamic, structural, transport and surface properties of Pb-Tl liquid alloy

BIBECHANA ◽  
2015 ◽  
Vol 13 ◽  
pp. 100-113 ◽  
Author(s):  
SK Yadav ◽  
LN Jha ◽  
D Adhikari
Keyword(s):  
Liquid Alloy ◽  
Surface Concentration ◽  
Heat Of Formation ◽  
Concentration Fluctuation ◽  
Heat Of Mixing ◽  
Long Wavelength ◽  
Wavelength Limit ◽  
Energy Of Mixing ◽  
Free Energy Of Mixing ◽  
Experimental Values

Thermodynamic properties, such as free energy of mixing, heat of mixing, entropy of mixing, activities and the microscopic structural properties, such as concentration fluctuation in long-wavelength limit and chemical short-range order parameter of Pb-Tl liquid alloy at 773 K have been studied on the basis of regular associated solution model. We have estimated the mole fractions of the complex and the unassociated atoms assuming the existence of  complex as energetically favoured in the liquid state. The compositional contributions of the heat of mixing of the species Pb and Tl and the heat of formation of the compound to the net enthalpy change have also been studied. The transport properties such as, viscosity and the ratio of mutual and intrinsic coefficients have been studied using different approaches. The surface concentration of Tl atoms has been computed and it has been employed to calculate the surface tension of Pb-Tl liquid alloy. Both the theoretical and the experimental values of the concentration fluctuation in long-wavelength limit are found to be less than the ideal value, revealing that the concerned system is hetero-coordinating in nature. The interaction energies are found to be temperature dependent and respective alloy is found to be weakly interacting system. BIBECHANA 13 (2016) 100-113

The Heat of Mixing ofHe3andHe4Solutions

1954 ◽  
Vol 94 (2) ◽  
pp. 241-243 ◽  
Author(s):  
V. S. Nanda
Keyword(s):  
Heat Of Mixing

Solid state amorphization reactions in deformed Ni-Zr multilayered composites

1990 ◽  
Vol 5 (3) ◽  
pp. 488-497 ◽  
Author(s):  
G. C. Wong ◽  
W. L. Johnson ◽  
E. J. Cotts
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Amorphous Phase ◽  
Equilibrium Phase ◽  
Solid State Reactions ◽  
Heat Of Mixing ◽  
Scanning Calorimetry ◽  
Multilayered Composites ◽  
State Amorphization ◽  
Thermal Stability Of

The mechanisms of metallic glass formation and competing crystallization processes in mechanically-deformed Ni-Zr multilayered composites have been investigated by means of differential scanning calorimetry and x-ray diffraction. Our investigation of the heat of formation of amorphous NixZr1−x alloys shows a large negative heat of mixing (on the order of 30 kJ/mole) for compositions near Zr55Ni45 with a compositional dependence qualitatively similar to that predicted by mean field theory. We find that the products of solid state reactions in composites of Ni and Zr can be better understood in terms of the equilibrium phase diagram and the thermal stability of liquid quenched metallic glasses. We have determined the composition of the growing amorphous phase at the Zr interface in these Ni-Zr diffusion couples to be 55 ± 4% Zr. We investigated the kinetics of solid state reactions competing with the solid state amorphization reaction and found the value of the activation energy of the initial crystallization and growth of the growing amorphous phase to be 2.0 ± 0.1 eV, establishing an upper limit on the thermal stability of the growing amorphous phase.

The prediction of high temperature vapor—liquid equilbiria from lower temperature heat of mixing data

1978 ◽  
Vol 27 (1-3) ◽  
pp. 9-18 ◽  
Author(s):  
Richard W. Hanks ◽  
Romeo L. Tan ◽  
James J. Christensen
Keyword(s):  
High Temperature ◽  
Heat Of Mixing ◽  
Temperature Heat ◽  
Lower Temperature ◽  
High Temperature Vapor ◽  
Vapor Liquid
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