The Determination of Thermodynamic Properties of melts from the Cu-Si-System by Mass Spectrometry

1981 ◽  
Vol 36 (5) ◽  
pp. 447-453 ◽  
Author(s):  
G. Riekert ◽  
P. Lamparter ◽  
S. Steeb
Keyword(s):  
Mass Spectrometry ◽  
Thermodynamic Properties ◽  
Composition Range ◽  
Entire Composition Range ◽  
Knudsen Effusion ◽  
Gibbs Energies ◽  
Thermodynamic Activities ◽  
Excess Gibbs Energies ◽  
Knudsen Effusion Technique

Abstract The Knudsen effusion technique combined with mass spectrometry has been applied to determine thermodynamic activities and excess Gibbs energies for the liquid Cu-Si System. The system shows a tendency for segregation over the entire composition range. Special features in the partial and integral properties could be interpreted by means of two models.

Modeling of the Thermodynamics of the Pseudobinary RbCl-GdCl3 System

2007 ◽  
Vol 62 (5-6) ◽  
pp. 270-274 ◽  
Author(s):  
Iwona Rutkowska ◽  
Jan Kapała
Keyword(s):  
Mass Spectrometry ◽  
Phase Diagram ◽  
Liquid Phase ◽  
Thermodynamic Properties ◽  
Optimization Procedure ◽  
Calphad Method ◽  
Knudsen Effusion ◽  
Gibbs Energies ◽  
Liquid Phases ◽  
Knudsen Effusion Mass Spectrometry

The Gibbs energies of formation of the pseudobinary compounds Rb3GdCl6(s) and RbGd2Cl7(s) from the constituent metal halides, determined by Knudsen effusion mass spectrometry, were compared with the thermodynamic properties of the solid and liquid phases of the RbCl-GdCl3 system, obtained by different methods. The compatibility of the results obtained in this work for pseudobinary compounds with literature data was assessed by an optimization procedure using the CALPHAD method. The liquid phase in the RbCl-GdCl3 system was described by the associate model. The phase diagram, thermodynamic functions of mixing of the system studied, and the Gibbs energies of formation of the pseudobinary compounds: Rb2GdCl5(s), Rb3GdCl6(s), and RbGd2Cl7(s) resulted from this optimization procedure.

scholarly journals Determination of the thermodynamic activities of LiF and ThF4in the LixTh1−xF4−3xliquid solution by Knudsen effusion mass spectrometry

2015 ◽  
Vol 17 (44) ◽  
pp. 30110-30118 ◽  
Author(s):  
Elisa Capelli ◽  
Ondřej Beneš ◽  
Jean-Yves Colle ◽  
Rudy J. M. Konings
Keyword(s):  
Mass Spectrometry ◽  
Vapour Pressure ◽  
Liquid Solution ◽  
Knudsen Effusion ◽  
Thermodynamic Activities ◽  
Knudsen Effusion Mass Spectrometry

Vapour pressure and thermodynamic activities of LiF and ThF4in the liquid solution are studied by Knudsen effusion mass spectrometry.

scholarly journals Determination of the thermodynamic properties for Cr.Co.Me (Me = Mo, Al) systems by using the general solution model for predicting

1999 ◽  
Vol 64 (12) ◽  
pp. 765-774 ◽  
Author(s):  
Dragana Zivkovic ◽  
Zivan Zivkovic
Keyword(s):  
General Solution ◽  
Thermodynamic Properties ◽  
Ternary System ◽  
Ternary Systems ◽  
Solution Model ◽  
Molar Excess ◽  
Gibbs Energies ◽  
General Solution Model ◽  
Excess Gibbs Energies

The results of the determination of the thermodynamic properties for ternary systems Cr.Co.Me (Me = Mo, Al) using a new general solution model for the predictions are presented in this work. For five sections (with mole ratio Co :Me = 2:8, 4:6, 5:5, 6:4, 8:2) investigated in each ternary system at temperature of 2000 K, integral molar excess Gibbs energies and partial molar thermodynamic properties of chromium were calculated.

Determination of the Work Function for Europium Dibromide by Knudsen Effusion Mass Spectrometry

2012 ◽  
Vol 57 (2) ◽  
pp. 436-438 ◽  
Author(s):  
Lev S. Kudin ◽  
Mikhail F. Butman ◽  
Dmitry N. Sergeev ◽  
Vladimir B. Motalov ◽  
Karl W. Krämer
Keyword(s):  
Mass Spectrometry ◽  
Work Function ◽  
Knudsen Effusion ◽  
Knudsen Effusion Mass Spectrometry
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