Li–Si phase diagram: Enthalpy of mixing, thermodynamic stability, and coherent assessment

2014 ◽  
Vol 616 ◽  
pp. 581-593 ◽  
Author(s):  
M. Helena Braga ◽  
Adam Dębski ◽  
Władysław Gąsior
Keyword(s):  
Phase Diagram ◽  
Thermodynamic Stability ◽  
Enthalpy Of Mixing

The Solidification in the Presence of a Metastable Miscibility Gap: The Case of Co-Cu and Co-Cu-X Alloys

2010 ◽  
Vol 649 ◽  
pp. 41-46 ◽  
Author(s):  
Livio Battezzati ◽  
Erik Johnson ◽  
Nini Pryds ◽  
Andrea Penna ◽  
Stefano Curiotto
Keyword(s):  
Phase Diagram ◽  
Phase Separation ◽  
High Temperature ◽  
Critical Temperature ◽  
Melt Spinning ◽  
Enthalpy Of Mixing ◽  
Processing Technique ◽  
Miscibility Gap ◽  
Cooling Conditions ◽  
History Of

Alloys displaying positive enthalpy of mixing demix below a critical temperature. In Co-Cu and related ternaries the miscibility gap is metastable, i.e. it occurs at temperatures lower than the liquidus. In order to study the liquid phase separation high melt undercooling is necessary. This was obtained via rapid solidification techniques using melt spinning and casting in moulding devices, as well as high temperature DSC experiments with samples embedded in a flux. Results are given for Co-Cu, Co-Cu-Fe and Co-Cu-Ni systems. Phase diagrams were optimised using the DSC data. The mechanism of phase separation was investigated by comparing samples produced under different cooling conditions. The hierarchy of microstructures obtained was interpreted accounting for the processing technique and the phase diagram. They constitute a database useful for the interpretation of the thermal history of samples processed in microgravity.

Thermodynamic stability of the superconducting phase diagram of UPt3

1993 ◽  
Vol 93 (1-2) ◽  
pp. 101-116 ◽  
Author(s):  
N. H. van Dijk ◽  
A. de Visser ◽  
J. J. M. Franse ◽  
L. Taillefer
Keyword(s):  
Phase Diagram ◽  
Thermodynamic Stability ◽  
Superconducting Phase

Thermodynamic Optimization and Calculation of the LaCl3-CaCl2 System

2019 ◽  
Vol 815 ◽  
pp. 15-20
Author(s):  
Yu Wang ◽  
Yun Wu ◽  
Jie Yang ◽  
Jin Song Xie ◽  
Qi Yi Yin
Keyword(s):  
Phase Diagram ◽  
Eutectic Point ◽  
Phase Diagram Data ◽  
Enthalpy Of Mixing ◽  
Calphad Method ◽  
Model Parameters ◽  
Thermodynamic Evaluation ◽  
Gibbs Energies ◽  
Liquid Phases ◽  
Calculated Enthalpy

A thermodynamic evaluation of the binary LaCl3-CaCl2 system was carried out by using CALPHAD method. The Modified Quasihelical Model was defined in order to describe the Gibbs energies of the liquid phases, and the model parameters were optimized from the experimental thermodynamic and phase diagram data. The phase diagram and the enthalpy of mixing of LaCl3-CaCl2 liquid were calculated. For LaCl3-CaCl2, a calculated eutectic point was observed at 924.82 K, 34.8 mol. % LaCl3. The calculated enthalpy of mixing is exothermic, the minimum was found at approximately 30 mol. % LaCl3. The thermodynamic properties and the phase diagram calculated from the optimized parameters agree well with the experimental data.

Phase diagram of HgTe–ZnTe pseudobinary and density, heat capacity, and enthalpy of mixing of Hg1−xZnxTe pseudobinary melts

1996 ◽  
Vol 80 (1) ◽  
pp. 137-142 ◽  
Author(s):  
Ching‐Hua Su ◽  
Yi‐Gao Sha ◽  
K. Mazuruk ◽  
S. L. Lehoczky
Keyword(s):  
Phase Diagram ◽  
Heat Capacity ◽  
Enthalpy Of Mixing

On the Thermodynamic Stability of Clathrate Hydrates VI: Complete Phase Diagram

2017 ◽  
Vol 122 (1) ◽  
pp. 297-308 ◽  
Author(s):  
Hideki Tanaka ◽  
Takuma Yagasaki ◽  
Masakazu Matsumoto
Keyword(s):  
Phase Diagram ◽  
Thermodynamic Stability ◽  
Clathrate Hydrates ◽  
Complete Phase Diagram

New developments in the ab initio determination of transition metal alloys phase diagram

1993 ◽  
Vol 90 ◽  
pp. 249-254 ◽  
Author(s):  
C Wolverton ◽  
M Asta ◽  
S Ouannasser ◽  
H Dreyssé ◽  
D de Fontaine
Keyword(s):  
Phase Diagram ◽  
Transition Metal ◽  
Ab Initio ◽  
Metal Alloys ◽  
New Developments ◽  
Transition Metal Alloys
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