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Experiments and thermodynamic calculations were performed on five cobalt-base superalloys containing tantalum carbide and chromium carbides in order to evaluate the accuracy of thermodynamic calculations for this alloy family. The studied quantities were the solidus temperature and the phase fractions of the different carbides observed after a long exposure time at different high temperatures. The...
The quasi-binary Tl 2 Te–In 2 Te 3 phase diagram has been constructed based on the results of studies by both thermal analysis and X-ray diffraction. Our earlier data obtained through electrochemical investigation of this system were of aid for the final establishment of the phase diagram. Numerical values of the phase transition temperatures at different alloy compositions...
The temperature of the degenerated invariant reaction in the Cu–V system was accurately determined by means of Differential Scanning Calorimetry (DSC) measurements. On the basis of the experimental data from the present work and those critically assessed from the literature, an optimal thermodynamic data set for the Cu–V system was obtained. Significant improvements have been made, compared with the...
The phase diagram of the Cu–In–Sb ternary system is of importance in predicting the interface reaction between In-based solder materials and the Cu substrate.The liquidus surface, invariant equilibria and four vertical sections of the Cu–In–Sb ternary system were calculated by the CALPHAD method using binary thermodynamic parameters included in the COST531 database. Alloys, representing two isopleths...
The phase diagram for the quasi-binary Tl 2 Se–SnSe 2 system was constructed based on the results of studies by both thermal analysis and X-ray diffraction. The diagram was compared with two other diagrams for the same system published earlier by other authors. The study produced substantial evidence corroborating the formation of two new chemical compounds.
Phase equilibria in the Bi–Cu–Ni ternary system have been studied using differential thermal analysis (DTA) as well as by using the calculation of the phase diagram (CALPHAD) method. Literature experimental phase equilibria data and DTA results from this study were used for thermodynamic modeling of the Bi–Cu–Ni ternary system. Isothermal sections at 300, 400, and 500 °C, vertical sections from bismuth...
The phase diagram of the ternary Ni–Pb–Sb system was investigated experimentally by differential scanning calorimetry (DSC) and scanning electron microscopy (SEM) with energy dispersive spectrometry (EDS) methods, and predicted using the calculation of phase diagrams (CALPHAD) method. The phase transition temperatures of alloys along three predicted vertical sections of the Ni–Pb–Sb ternary system,...
Experimental investigations and Gibbs energy modelling of KCl–LiCl–UCl3 system employing CALPHAD method are reported. Gibbs energy modelling of the subsystems KCl–UCl3 and LiCl–UCl3 was carried out primarily using phase diagram data from the literature. For the Gibbs energy modelling of the KCl–LiCl subsystem, new phase boundary data corresponding to four terminal compositions (xLiCl=0.03, 0.05, 0...
In this work, Fe-Pr alloys and Fe-Nd alloys were investigated experimentally by means of thermal analysis. The temperatures of the invariant reactions and liquidus in the Fe-Pr and Fe-Nd binary systems were measured. Based on the experimental results determined in this work and the critical review of the available experimental data in published literature, the Fe-Pr and Fe-Nd binary systems were re-assessed...
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