Victor Kuznetsov

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Papers by Victor Kuznetsov

Phase Equilibria of the In–Pd–Sn System at 500 °C and 800 °C: Experimental Study and CALPHAD Modeling

Materials

Phase equilibria in the In–Pd–Sn system were investigated by a combination of key experiments and... more Phase equilibria in the In–Pd–Sn system were investigated by a combination of key experiments and thermodynamic modeling. Partial isothermal sections at 500 °C and 800 °C of the In–Pd–Sn system for Pd contents above 66 at.% have been plotted experimentally using scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX) and X-ray diffraction (XRD). The solubility of the third component in binary compounds InPd3 and Pd3Sn was determined. The new ternary compound τ1 was found in Pd contents ranging from 20 to 25 at.% and at Sn contents varying from 5 to approximately 17 at.% Sn. This compound crystallizes in an Al3Ti-type tetragonal structure. Isostructural InPd2 and Pd2Sn phases from the In–Pd and Pd–Sn binary compositions form a continuous phase field in the ternary system at both temperatures. The temperatures of the solidus, liquidus, and phase transitions of the alloys along the Pd–In50Sn50 line were measured using DTA/DSC. Thermodynamic calculation of the I...

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Phase equilibria in the Au–Cu–In ternary at 500оC: Experimental study and CALPHAD modeling

Calphad

Effect of Sodium Chloride and pH on the Composition of the Equilibrium Phases and the Partition of Palladium(II) in the Aqueous Two-Phase System PEG1500–Na2SO4–Water

Journal of Chemical & Engineering Data

Phase equilibria in the Fe–Cr–V system at 900°C

Chemistry of Metals and Alloys

The phase equilibria in the Fe-Cr-V ternary system at 900°C (1173 K) were studied using XRD, meta... more The phase equilibria in the Fe-Cr-V ternary system at 900°C (1173 K) were studied using XRD, metallography and EPMA. The main attention was focused on the character of propagation of the σ phase from the Fe-V edge into the ternary system. As shown by the present data, at 900°C the field of the σ phase is directed from the Fe-V side towards the composition of the σ phase of the Fe-Cr binary edge (which is virtual at that temperature). The solubility of Cr in the σ phase at 900°C reaches about 40 at.%.

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Synthesis and crystal structure of a new Cu3Au-type ternary phase in the Au–In–Pd system: distribution of atoms over crystallographic positions

Acta Crystallographica Section C Structural Chemistry

A new Cu3Au-type ternary phase (τ phase) is found in the AuPd-rich part of the Au–In–Pd system. I... more A new Cu3Au-type ternary phase (τ phase) is found in the AuPd-rich part of the Au–In–Pd system. It has a broad homogeneity range based on extensive (Pd,Au) and (In,Au) replacement, with the composition varying between Au17.7In25.3Pd57.0 and Au50.8In16.2Pd33.0. The occupancies of the crystallographic positions were studied by single-crystal X-ray diffraction for three samples of different composition. The sites with m\overline{3}m symmetry are occupied by atoms with a smaller scattering power than the atoms located on 4/mmm sites. Two extreme structure models were refined. Within the first, the occupation type changes from (Au,In,Pd)3(Pd,In) to (Au,Pd)3(In,Pd,Au) with an increase in the Au gross content. For the second model, the occupation type (Au,In,Pd)3(Pd,Au) remains essentially unchanged for all Au concentrations. Although the diffraction data do not allow the choice of one of these models, the latter model, where Au substitutes In on 4/mmm sites, seems to be preferable, since ...

Using DTA/DSC data for assessment of the Toop and Muggianu predictive models for the Ag–Au–In ternary

Journal of Thermal Analysis and Calorimetry

Isothermal sections of the Au-In-Pd system at 500 and 800 °С

Journal of Alloys and Compounds

Study of the interaction of Pt and Ph with Nb or Ta

Journal of Alloys and Compounds

ABSTRACT

Isothermal section of the Cu-In-Pd system at 800°C

Russian Metallurgy (Metally)

ABSTRACT

Thermodynamic modeling of phase equilibria in the Ni-V system

Russian Journal of Physical Chemistry

A new CALPHAD assessment calculation for the Ni-V system was performed. The resulting description... more A new CALPHAD assessment calculation for the Ni-V system was performed. The resulting description of the system proved to be simpler than the one published (with almost half the number of adjust ing parameters: 22 instead of 39) and every bit as good in terms of precision. The published data on the coor dinates of phase boundaries and the thermodynamic properties (enthalpies of formation) of phases were sup plemented with the results from a specially performed experiment to determine the enthalpy of eutectic reac tion L σ + fcc using the DTA method; the enthalpy value was 8.2 ± 0.5 kJ/mol.

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Isothermal Sections of Pd-Cu-Sn System at 500 and 800 °C

Journal of Phase Equilibria and Diffusion

ABSTRACT