Search results for: G. G. Mikhailov

Items from 1 to 20 out of 26 results

article

Thermodynamic Modeling of Isotherms of Oxygen Solubility in Liquid Metal of the Fe–Mg–Al–O System

G. G. Mikhailov, O. V. Samoilova, L. A. Makrovets, L. A. Smirnov

Steel in Translation > 2019 > 49 > 8 > 522-527

In this paper, we studied the interaction of magnesium and aluminum dissolved in liquid iron with oxygen, which is an important problem for choosing the optimal parameters of steel refining and casting. The relevance of the study is determined by the possibility and conditions for the formation of adverse refractory particles of magnesium oxide and magnesian spinel in the melt. We performed the thermodynamic...

article

Experimental Study of Refining and Modification of Steel with Si–Ca, Si–Sr, and Si–Ba Alloys

I. V. Bakin, N. A. Shaburova, I. V. Ryabchikov, V. G. Mizin, more

Steel in Translation > 2019 > 49 > 8 > 543-547

The results of thermodynamic calculations and experimental studies of the deoxidation, desulfurization, and modification of low-carbon steel with aluminum and Si–Ca, Si–Sr, and Si–Ba alloys are presented. The metal treatment with silicocalcium leads to the formation of corrosive non-metallic inclusions (CANI). The replacement of calcium-containing alloys with Ba and Sr alloys helps to clean steel...

article

Comparison of the Reducibilities of Hydrogen and Carbon Monoxide for Iron Oxides

Yu. S. Kuznetsov, G. G. Mikhailov, O. I. Kachurina

Russian Metallurgy (Metally) > 2019 > 2019 > 7 > 698-709

—Thermodynamic analysis of the reduction of iron oxides in gas mixtures with H₂ and CO shows that the ratio of the reducibilities of these gases (γ) can decrease or increase with temperature or can be temperature-independent under different conditions. This contradicts the commonly accepted assertion that the reducibilities of H₂ and CO at 1093 K are equal and that the reducibility of H₂ increases...

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Thermodynamics of the Interactions in Fe–Mg–Al–La–O Melts

G. G. Mikhailov, L. A. Makrovets, L. A. Smirnov

Steel in Translation > 2018 > 48 > 6 > 357-361

Today, rare-earth elements are mainly introduced in alloys in the form of misch metal, which is a natural mixture of rare-earth elements (with atomic numbers 57–71). This mixture contains about 50 wt % cerium. The primary components of the mixture are generally cerium, lanthanum, and niobium. The specific composition depends on the particular field from which they were drawn. The variable composition...

article

Phase Equilibria in Liquid Metal of the Cu–Al–Cr–O System

O. V. Samoilova, L. A. Makrovets, G. G. Mikhailov

Russian Journal of Non-Ferrous Metals > 2017 > 58 > 6 > 579-585

A thermodynamic analysis of phase equilibria in the Cu–Al–Cr–O system is carried out. Thermodynamic modeling of the liquidus surface of the Cu₂O–Al₂O₃–Cr₂O₃ oxide phase diagram is performed. To describe activities of an oxide melt, the approximation of the theory of subregular ionic solutions, the energy parameters of which were determined during modeling, is used. Melting characteristics of the CuCrO...

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Thermodynamic description of the interaction processes in the Cu–Ce–O system in the temperature range 1100–1300°C

O. V. Samoilova, G. G. Mikhailov, L. A. Makrovets, E. A. Trofimov

Russian Metallurgy (Metally) > 2017 > 2017 > 3 > 209-215

A thermodynamic simulation and an experimental study of the interaction between cerium and oxygen in liquid copper have been performed. The thermodynamic analysis of the interaction processes in the Cu–Ce–O system is carried out using the technique of constructing the surface of solubility of components in a metal in the temperature range 1100–1300°C. As a result of simulation, data on changes in...

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Thermodynamic simulation and an experimental study of the possibility of synthesizing hardened Cu–Zr–O alloys

O. V. Samoilova, G. G. Mikhailov, E. A. Trofimov, L. A. Makrovets

Russian Metallurgy (Metally) > 2016 > 2016 > 9 > 864-868

The conditions of formation of hardened Cu–Zr–O alloys are determined theoretically and experimentally. Thermodynamic analysis of the possibility of formation of zirconium oxide in a liquid metal is performed by constructing the surface of component solubility in a metal melt. Disperse zirconium oxide inclusions in samples are detected by scanning electron microscopy and electron-probe microanalysis...

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Analysis of the Fe–Ce–O–C–M phase diagrams (M = Ca, Mg, Al, Si) by constructing a component-solubility surface

G. G. Mikhailov, L. A. Makrovets, L. A. Smirnov, L. E. Dresvyankina

Russian Metallurgy (Metally) > 2016 > 2016 > 6 > 522-529

Analysis of the ternary phase diagrams of Ce₂O₃- and CeO₂-containing oxide systems allowed us to find the oxide compounds that form during steel deoxidizing with cerium and with cerium together with aluminum, calcium, magnesium, or silicon. The temperature dependences of the equilibrium constants of formation of Ce₂O₃ oxides and Ce₂O₃ · Al₂O₃, Ce₂O₃ · 11Al₂O₃, Ce₂O₃ · 2SiO₂, 7Ce₂O₃ · 9SiO₂ and Ce₂...

article

Polycondensation kinetics of furfuryl alcohol solutions

D. A. Zherebtsov, D. M. Galimov, O. V. Zagorul’ko, E. V. Frolova, more

Russian Journal of Physical Chemistry A > 2016 > 90 > 1 > 48-53

Changes in the viscosity, electrical conductivity, monomer concentration, and the size of growing molecules of polycondensed furfuryl alcohol are studied in solutions containing triethylene glycol and isooctylphenyldecaethylene glycol. The effect the solution compositions have on the condensation kinetics is considered.

article

Thermodynamic modeling of the reaction of lanthanum with components of iron-based melts

G. G. Mikhailov, L. A. Makrovets, L. A. Smirnov

Steel in Translation > 2015 > 45 > 12 > 913-918

Thermodynamic analysis of binary and ternary oxide systems containing the oxide La₂O₃ permits the formulation of a database of energy parameters in the theory of subregular solutions for oxide melts adjacent to the region of existence of metallic melts in the phase diagram of the system. The temperature dependence of the equilibrium constants for the heterogeneous reduction of steel is established...

article

Thermodynamic modeling of the interaction of high-level element and oxygen in iron-based melt

G. G. Mikhailov, L. A. Makrovets, L. A. Smirnov

Steel in Translation > 2015 > 45 > 11 > 872-882

The main reactions of calcium, cerium, lanthanum, silicon, and complex alloys with the active additive Ca–Si, Ca–Al, Ce–Si, La–Si, Ce–La, or Ce–Ca–Al are subjected to thermal analysis. On the basis of binary and ternary fusibility diagrams, the thermodynamic data are refined for the main reactions between complex alloys with rare-earth elements and the oxygen present in the liquid metal. Solubility...

article

Structure and adsorption properties of microporous glassy-carbon materials

D. A. Zherebtsov, S. B. Sapozhnikov, D. M. Galimov, K. R. Smolyakova, more

Russian Journal of Physical Chemistry A > 2015 > 89 > 5 > 840-845

Products of the calcination of polymer based on furan resin modified by surface-active agent and diluter are studied. Microporous glassy-carbon materials with specific areas of up to 1350 m ² /g are obtained. The materials are studied by means of electron microscopy, and their specific surface areas are compared to their structures. The range of solution compositions in which bicontinual...

article

Thermodynamics of steel modification by barium and cesium alloys

G. G. Mikhailov, L. E. Dresvyankina, L. A. Makrovets

Steel in Translation > 2014 > 44 > 6 > 428-432

On the basis of experimental, production, and literature data, appropriate parameters for the theory of subregular ionic solutions are determined. Solubility surfaces for the components are plotted, for low-alloy and carbon steel and also for multicomponent alloys.

article

System analysis of the reduction of iron oxides

G. G. Mikhailov, Yu. S. Kuznetsov, O. I. Kachurina

Russian Metallurgy (Metally) > 2014 > 2014 > 3 > 179-184

The parameters of the equilibria that take place during the reduction of iron oxides in the water gas medium (CO-CO₂-H₂-H₂O) in the presence and absence of carbon are calculated. The possibilities of the diagram technique of representing results are discussed. The following two spatial diagrams are plotted: one of them reflects a set of three-phase equilibrium surfaces, and the curved surface in the...

article

Distribution of dopant metals between PbTiO₃ crystals and PbO-B₂O₃ flux

D. A. Vinnik, D. A. Zherebtsov, R. Niewa, L. I. Isaenko, more

Russian Journal of General Chemistry > 2014 > 84 > 10 > 1888-1892

Single crystals of lead titanate PbTiO₃ doped with silicon, calcium, chromium, manganese, cobalt, nickel, copper, zinc, and cadmium were grown. The compositions and crystallographic parameters of the crystals were studied. The lowest distribution coefficients of dopants between PbTiO₃ crystals and flux were observed with Mn⁺² and Co⁺² and the highest, with Ca⁺². Doping with niobium leads to the formation...

article

Reduction of iron oxides by wet gas in the presence of carbon

G. P. Vyatkin, G. G. Mikhailov, Yu. S. Kuznetsov, O. I. Kachurina, more

Steel in Translation > 2013 > 43 > 4 > 161-167

The equilibrium parameters in the reduction of iron oxides by wet gas (CO + CO₂ + H₂ + H₂O) in the presence of carbon are calculated. Graphical representation of the results is discussed, and a diagram is plotted consisting of a set of three-phase equilibrium surfaces and four-phase equilibrium curves, whose point of intersection determines the parameters of invariant five-phase equilibrium. The composition...

article

Thermodynamic analysis of the Cu-Si-Ni-O system

O. V. Samoilova, L. A. Makrovets, G. G. Mikhailov, E. A. Trofimov

Russian Journal of Non-Ferrous Metals > 2012 > 53 > 3 > 223-228

The liquidus surface of the Cu₂O-SiO₂-NiO ternary phase diagram is constructed. It is shown that the peritectic reactions occur in the ternary diagram; due to them, a the existence region of nickel olivine Ni₂SiO₄ with oxide melt manifests itself. A solubility surface of components in the metal of the Cu-Si-Ni-O system for a temperature of 1200°C is constructed.

article

Reduction of iron oxides in a humid atmosphere

G. P. Vyatkin, G. G. Mikhailov, Yu. S. Kuznetsov, O. I. Kachurina, more

Steel in Translation > 2012 > 42 > 2 > 103-106

Original Russian Text © G.P. Vyatkin, G.G. Mikhailov, Yu.S. Kuznetsov, O.I. Kachurina, S.V. Digonskii, 2012, published in “Izvestiya VUZ. Chernaya Metallurgiya,” 2012, No. 2, pp. 10–13.

article

Phase equilibria in Cu-As(Sb,Bi)-O systems under conditions of the existence of a copper-based alloy

E. A. Trofimov, G. G. Mikhailov

Russian Journal of Non-Ferrous Metals > 2011 > 52 > 2 > 129-134

Solubility surfaces of components in metal melts for the Cu-As-O, Cu-Sb-O, and Cu-Bi-O systems in the range t = 1100–1300°C and high-temperature fragments of phase diagrams of oxide systems Cu₂O-R₂O₃ (R is As, Sb, Bi) are constructed based on thermodynamic calculations. Phase equilibria in the Cu-Sb-O and Cu-Bi-O systems are investigated experimentally. The results can be used to analyze the production...

article

Behavior of the central bath region when smelting Carbon ferrochrome in a ferroalloy furnace

A. I. Pashkeev, I. Yu. Pashkeev, G. G. Mikhailov

Steel in Translation > 2009 > 39 > 4 > 336-340

Original Russian Text © A.I. Pashkeev, I.Yu. Pashkeev, G.G. Mikhailov, 2009, published in “Stal’,” 2009, No. 4, pp. 35–38.

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Keywords

REDUCTION (5)
PHASE EQUILIBRIA (4)
THERMODYNAMICS (4)
ALUMINUM (3)
LANTHANUM (3)
PHASE DIAGRAMS (3)
DEOXIDATION (2)
MAGNESIUM (2)
MODIFICATION (2)
OXYGEN (2)
PHASE DIAGRAM (2)
THERMODYNAMIC MODELING (2)
ANTIMONY (1)
ARSENIC (1)
BARIUM (1)
BISMUTH (1)
CERIUM (1)
CHROMIUM BRONZE PRODUCTION (1)
COPPER (1)
COPPER MELT (1)
CORROSION-ACTIVE INCLUSIONS (1)
CU2O–AL2O3–CR2O3 SYSTEM (1)
CU–AL–CR–O SYSTEM (1)
CU–CE–O SYSTEM (1)
DEOXIDATION OF COPPER AND COPPER-BASED ALLOYS (1)
DESULFURIZATION (1)
ELECTRICAL CONDUCTIVITY (1)
FURAN RESIN (1)
FURFURYL ALCOHOL (1)
GASIFICATION OF CARBON (1)
GLASSY CARBON (1)
GRAIN SIZE (1)
KEYWORDS: IRON OXIDES (1)
KINETICS (1)
LEAD OXIDE SOLID SOLUTIONS (1)
LEAD TITANATE (1)
METAL MELTS (1)
MICROSTRUCTURE (1)
MODELING (1)
NANOPORES (1)
NICKEL (1)
NON-METALLIC INCLUSIONS (1)
NONMETALLIC COMPOUNDS (1)
NONMETALLIC INCLUSIONS (1)
OXIDE PHASE (1)
OXIDES (1)
OXYSULFIDES (1)
POLYCONDENSATION (1)
REDUCIBILITY (1)
REFINING (1)
SILICOBARIUM (1)
SILICOCALCIUM (1)
SILICON (1)
SILICOSTRONTIUM (1)
SINGLE CRYSTALS (1)
SOLUBILITY SURFACE OF COMPONENTS IN THE METAL MELT (1)
SOLUTIONS (1)
SULFIDES (1)
SURFACE OF SOLUBILITY OF COMPONENTS IN METAL MELT (1)
SYSTEMS (1)
TERNARY OXIDE PHASE DIAGRAM (1)
THERMODYNAMIC ANALYSIS (1)
THERMODYNAMIC CALCULATIONS (1)
THERMODYNAMIC SIMULATION (1)
VISCOSITY (1)
WATER GAS (1)
more

Journal

Steel in Translation (11)
Russian Metallurgy (Metally) (5)
Russian Journal of Non-Ferrous Metals (4)
Russian Journal of Applied Chemistry (2)
Russian Journal of Physical Chemistry A (2)
Metallurgist (1)
Russian Journal of General Chemistry (1)

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Search results for: G. G. Mikhailov

Thermodynamic Modeling of Isotherms of Oxygen Solubility in Liquid Metal of the Fe–Mg–Al–O System

Experimental Study of Refining and Modification of Steel with Si–Ca, Si–Sr, and Si–Ba Alloys

Comparison of the Reducibilities of Hydrogen and Carbon Monoxide for Iron Oxides

Thermodynamics of the Interactions in Fe–Mg–Al–La–O Melts

Phase Equilibria in Liquid Metal of the Cu–Al–Cr–O System

Thermodynamic description of the interaction processes in the Cu–Ce–O system in the temperature range 1100–1300°C

Thermodynamic simulation and an experimental study of the possibility of synthesizing hardened Cu–Zr–O alloys

Analysis of the Fe–Ce–O–C–M phase diagrams (M = Ca, Mg, Al, Si) by constructing a component-solubility surface

Polycondensation kinetics of furfuryl alcohol solutions

Thermodynamic modeling of the reaction of lanthanum with components of iron-based melts

Thermodynamic modeling of the interaction of high-level element and oxygen in iron-based melt

Structure and adsorption properties of microporous glassy-carbon materials

Thermodynamics of steel modification by barium and cesium alloys

System analysis of the reduction of iron oxides

Distribution of dopant metals between PbTiO₃ crystals and PbO-B₂O₃ flux

Reduction of iron oxides by wet gas in the presence of carbon

Thermodynamic analysis of the Cu-Si-Ni-O system

Reduction of iron oxides in a humid atmosphere

Phase equilibria in Cu-As(Sb,Bi)-O systems under conditions of the existence of a copper-based alloy

Behavior of the central bath region when smelting Carbon ferrochrome in a ferroalloy furnace

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