Mixing enthalpies in liquid alloys of manganese with the lanthanides

Иванов, М. И.; Berezutski, V. V.; Usenko, Natalia

doi:10.3139/146.110474

Cited by 40 publications

(44 citation statements)

References 14 publications

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“…6. The calculated mixing enthalpy is in good agreement with the experimental data measured by Ivanov et al [25]. It should be pointed out that the enthalpy of mixing of the liquid MnNd alloys calculated by Mostafa et al [16] is in good agreement with the experimental data [25] at Nd-rich side, but shows slight deviation at Mn-rich side.…”

Section: Thermodynamic Calculationsupporting

confidence: 85%

“…The calculated mixing enthalpy is in good agreement with the experimental data measured by Ivanov et al [25]. It should be pointed out that the enthalpy of mixing of the liquid MnNd alloys calculated by Mostafa et al [16] is in good agreement with the experimental data [25] at Nd-rich side, but shows slight deviation at Mn-rich side. Figure 7 is the calculated enthalpies of formation of the intermetallic compounds in the Mn-Nd system at 298 K. The enthalpies of formation of the intermetallic compounds, Mn 2 Nd, Mn 23 Nd 6 and Mn 17 Nd 2 , were calculated to be 2339.51, -351.49 and -2631.58 J mol -1 in the present work, respectively.…”

Section: Thermodynamic Calculationsupporting

confidence: 85%

“…[15,16]. Figure 5 shows the calculated partial molar enthalpies of Mn and Nd in liquid alloys at 1600 K with the experimental data [25]. It can be seen that the calculated results are satisfactorily consistent with the experimental data within the estimated error.…”

Section: Thermodynamic Calculationsupporting

confidence: 69%

“…Ivanov et al [25] Up to now, the enthalpies of formation of the intermetallic compounds (Mn 2 Nd, Mn 23 Nd 6 and Mn 17 Nd 2 ) in the Mn-Nd binary system were not determined experimentally in the published literature. In the thermodynamic optimization of the Mn-Nd binary system, the enthalpies of formation of Mn 2 Nd and Mn 23 Nd 6 , were calculated by Kim and Jung [15] to be 5400 and 3910 J mol -1 , respectively.…”

Section: Thermodynamic Datamentioning

confidence: 96%

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Experimental investigation and thermodynamic re-assessment of the Mn–Nd binary system

Rong

Wang

et al. 2016

J Therm Anal Calorim

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Fourteen Mn-Nd alloys were investigated experimentally by means of thermal analysis. The temperatures of the invariant reactions and liquidus in the Mn-Nd binary system were determined. Based on the experimental results obtained in the present work as well as the experimental data reported and the previous assessments in the literature, the Mn-Nd binary system was re-assessed thermodynamically using the CALPHAD method. The solution phases, including liquid, a-Mn, b-Mn, c-Mn, d-Mn, a-Nd and d-Nd, are modeled by the substitutional solution model, and their excess Gibbs energies are expressed with the Redlich-Kister polynomial. The intermetallic compounds, Mn 2 Nd, Mn 23 Nd 6 and Mn 17 Nd 2 , are treated as stoichiometric compounds. A set of self-consistent thermodynamic parameters obtained finally to describe the Gibbs energies of various phases in the Mn-Nd binary system can be used to reproduce well the reported phase equilibria and thermodynamic data.

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Section: Thermodynamic Calculationsupporting

confidence: 85%

Section: Thermodynamic Calculationsupporting

confidence: 85%

Section: Thermodynamic Calculationsupporting

confidence: 69%

Section: Thermodynamic Datamentioning

confidence: 96%

See 2 more Smart Citations

Experimental investigation and thermodynamic re-assessment of the Mn–Nd binary system

Rong

Wang

et al. 2016

J Therm Anal Calorim

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“…The experimental procedure using an isoperibol calorimeter is described in [23]. We used Al (99.99%), Mo (MCh grade, 99.96%), and Pr (PrM-2 grade, as per TU 48-4-215-72, 99.8%).…”

Section: Experimental Procedures and Modelingmentioning

confidence: 99%

Thermodynamic Properties of Binary Al–Pr Alloys

Shevchenko

Березуцкий

Иванов

et al. 2016

Powder Metall Met Ceram

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The mixing enthalpies of Al-Pr binary liquid alloys are measured in the ranges 0 < x Pr < 0.15 at 1560 K and 0.46 < x Pr < 1 at 1410-1670 K by isoperibol calorimetry. The Al-Pr binary melts are characterized by significant negative mixing enthalpies: min Pr Al H   = -43.1 kJ/mol at x Pr = 0.33 (at 1500 K, extrapolation onto the range of supercooled melts). The activities of components, entropies, Gibbs energies, and liquidus curve of the Al-Pr phase diagram are evaluated using the model of ideal associated solutions.

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Development of thermodynamic database of the Mn‐RE (RE = rare earth metals) binary systems

Ye,

Wang,

Chen

et al. 2024

Materials Genome Engineering Advances

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In this work, eight Mn‐RE (RE = Ce, Pr, Sm, Tb, Er, Tm, Lu, and Y) binary systems were reassessed thermodynamically by the CALPHAD method based on the reported optimizations and experimental information. Self‐consistent thermodynamic parameters to describe Gibbs energies of various phases in eight Mn‐RE binary systems were obtained. The calculated phase equilibria and thermodynamic properties of eight Mn‐RE binary systems are in good accordance with the experimental results. Furthermore, phase equilibria and thermodynamic properties of 13 Mn‐RE (RE = La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y) binary systems were discussed systematically in combination with the present calculations and the reported optimizations. A trend was found for the variation of phase equilibria and thermodynamic properties of the Mn‐RE binary systems. In general, as the RE atomic number increases, the enthalpies of mixing of liquid alloys as well as the enthalpies of formation of the intermetallic compounds become increasingly negative, and the formation temperatures of the intermetallic compounds become higher. The results provide a complete set of self‐consistent thermodynamic parameters for the Mn‐RE binary systems, and a thermodynamic database of 13 Mn‐RE binary systems was finally achieved.

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Mixing enthalpies in liquid alloys of manganese with the lanthanides

Cited by 40 publications

References 14 publications

Experimental investigation and thermodynamic re-assessment of the Mn–Nd binary system

Experimental investigation and thermodynamic re-assessment of the Mn–Nd binary system

Thermodynamic Properties of Binary Al–Pr Alloys

Development of thermodynamic database of the Mn‐RE (RE = rare earth metals) binary systems

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