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Article
Thermochemical Study of the Formation of Silicides, Borides, and Carbides in an Fe–Ni–Cr–Cu–Si–B–C Alloy
Calculation methods using combined GGA and GGA + U schemes (semiempirically tuned generalized gradient approximations) are applied to determine the thermochemical characteristics (enthalpy, molar heat capacity...
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Article
Distribution of Radioactive Elements during Slag Remelting of the Structural Materials of the VVER Fuel Rod Cladding
The PO Mayak radiochemical plant processes spent nuclear fuel (SNF) and generates about 170 t/year metallic radioactive wastes (MRW), which are mainly represented by fragments of the structural materials (SMs)...
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Article
Possibility of obtaining refractory high-entropy AlTiZrVNb alloys from metal oxides
We consider a new method for the preparation of refractory high-entropy alloys (HEAs) AlTiZrVNb, which consists in the joint aluminothermic reduction of metals from their oxides. It was determined that V and N...
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Article
Synthesis of High-Entropy Alloy AlTiZrVNb by Aluminothermic Reaction
The possibility of using the aluminothermic method for the reduction of metals from oxides in the synthesis of high-entropy alloys is shown. The features of the aluminothermal production of a high-entropy AlTi...
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Article
Activities of Aluminum and Calcium Oxides in the CaO–Al2O3 and CaO–SiO2–Al2O3 Melts
The thermodynamic activities of aluminum and calcium oxides in the CaO–Al2O3 and CaO–SiO2–Al2O3 systems are calculated using the concepts of a polymer model of oxide melts, which takes into account the variable f...
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Article
Thermodynamic Estimation of the Phase Transformations of the Fe–Ni–Cr–Cu–Si–C System
Thermodynamic analysis of phase transformations of the multicomponent Fe–Ni–Cr–Cu–Si–C system is performed. It is of interest for the advanced metallothermic preparation technology of a wear-resistant alloy. T...
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Article
Phase Transformations in a Fe–Ni–Cr–Cu–Si–B–C Composition during Mechanochemical Alloying
To investigate the possibility of preparation of a surfacing powder for gas-plasma facing, mechanochemical alloying of a mixture of Fe, Ni, Cr, Cu, B, and C powders is performed in a MPP-2-1K planetary mill fo...
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Article
Joint Metallothermic Reduction of Titanium and Rare Refractory Metals of Group V
The features of phase formation during the joint aluminothermic reduction of titanium, niobium, tantalum, and vanadium from their oxides are studied using thermodynamic modeling and differential thermal (DTA) ...
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Article
Thermodynamic Estimation of the Formation of a High-Entropy Al–Nb–Ti–V–Zr Alloy
High-entropy alloys (HEAs) are the subject of attention of many scientific researchers. More than 200 thousand publications are known for HEAs and their number is growing every day. Particular interest in HEAs...
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Article
Effect of Nanostructuring of Aluminum, Copper, and Alloys on Their Basis Wear for Resistance and Hardness
A comparative study of the wear resistance and hardness of samples of A1100 grade aluminum grade, C11000 grade copper, 518.0 aluminum–magnesium alloy, and C95200 bronze obtained by the metallurgical method wit...
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Article
Effect of the Channel Inclination Angle on Convective Mixing Caused by Instability of Mechanical Equilibrium of Ternary Gas Mixture at Isothermal Diffusion
The peculiarities of a convective regime aroused due to instability of mechanical equilibrium of a ternary helium–argon–nitrogen gas mixture at isothermal diffusion are experimentally investigated. The effect ...
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Article
Aluminothermic Reduction of Titanium in the Presence of Tantalum and Vanadium Oxides
The combined aluminothermic reduction of titanium and tantalum and of titanium and vanadium from their pentoxides is theoretically and experimentally simulated. The sequence and features of the formation of co...
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Article
Influence of Niobium and Tantalum on the Phase Formation during the Metallothermic Interaction of Aluminum with Titanium Dioxide
The aluminothermic coreduction of titan, niobium, and tantalum from oxides is thermodynamically simulated. The simulation results are in agreement with the results of combined scanning calorimetry and metallot...
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Article
Evolution of Phase Formation during the Aluminothermic Reduction of Titanium and Zirconium from Oxides
The sequence of formation of intermetallic compounds in the Al–ZrO2 and Al–TiO2 systems is determined by theoretical and experimental modeling of the aluminothermic reduction of titanium and zirconium from their ...
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Article
Experimental Evaluation of the Interaction of Titanium and Gadolinium Oxides with Aluminum
The sequence of formation of compounds in the Al–TiO2–Gd2O3 system is determined using theoretical and experimental evaluations of the aluminothermic reduction of titanium and gadolinium from oxides. The reductio...
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Article
Effect of a Nonstationary Electric Current on the Oxide Melt–Gas Phase System
The influence of a nonstationary electric current on an oxide melt is studied. A nonstationary energy action is found to change the microstructure of a liquid system and to promote unlikely chemical reactions ...
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Article
Surface tension of a titanium-containing oxide–fluoride melt calculated by the polymer theory
The surface tension of an aluminum–calcium oxide–fluoride melt is calculated using the polymer theory. It is shown that, at 15 mol % titanium oxide in the melt, aluminum–fluorine–oxygen complexes mainly form. ...
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Article
Calculation of the titanium and zirconium activities in an aluminum–calcium oxide melt
The activities of titanium and zirconium in aluminum–calcium oxide melts are calculated using the models of collective electrons and polymer theory.
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Article
Effect of the intermetallic compound composition of the character of interphase interactions during aluminothermic coreduction of titanium, nickel, and molybdenum from their oxides
The correlation between the sequence of formation of intermetallic compounds and the nature of interphase interactions in the course of aluminothermic coreduction of titanium, nickel, and molybdenum from their...
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Article
Influence of phase formation on the interphase interactions during the aluminothermic reduction of zirconium from its dioxide
The surface and volume properties of the zirconium–aluminum alloys synthesized by the aluminothermic reduction of zirconium from its dioxide are estimated theoretically and experimentally. The experimental val...
