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Article
High-Density Mo–W–Cu Pseudoalloys Based on Homogenous Mo–25% W Powder Alloy Produced by Reducing Oxide Powders in Moving Layers
The article aimed to obtain a structural material with increased plasticity and density of 98.5–99.5% based on (Mo–25% W)–20 vol.% Cu pseudoalloys with a homogeneous refractory skeleton obtained by a single-ti...
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Article
Mechanism for Improving the Mechanical Properties of Sintered Iron–Copper Composites Alloyed with Molybdenum
The structure of Fe–Cu composites after solid-phase and liquid-phase sintering was studied. It is shown that 2–10 wt.% molybdenum additions have an activating effect on the diffusion processes in densification...
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Article
Copper Hardening with Fine Iron Particles
The production of sintered bulk Cu–(5–25% Fe) pseudoalloys retaining the α-iron phase is studied. The pseudoalloys with a relative density of 97.5–98.1% are prepared by sintering a powder mixture of the metals...
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Article
The Structure and Properties of Powder Copper Hardened by Fine Tungsten Particles
The Cu–W pseudoalloys with 2–10 vol.% of nanosized tungsten particles (30–40 nm) are studied. The bulk samples with relative density up to 99.1–99.6% are produced by shock compaction. The introduction of nanos...
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Article
Effect of Microwave Heating on the Mass Transfer, Phase Formation, and Microstructural Transformations in the Y2O3–Al2O3 Diffusion Couple
The phase composition, phase growth kinetics, and structures of diffusion zones formed under microwave heating (24 GHz) (MWH) and conventional heating (CH) in two-layer Al2O3–Y2O3 samples are studied by optical a...
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Article
Interdiffusion and Structural Changes in the Cr2O2–Al2O3(ZrO2) Diffusion Couple under Microwave Heating
The interdiffusion and microstructural evolution of the Cr2O3–Al2O3 (5 vol.% ZrO2) diffusion couple are studied in the temperature range 1600–1800°C under microwave heating (24 Hz) and, for comparison, under trad...
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Article
Effect of heat treatment on the plasticity of molybdenum-doped iron–copper pseudoalloys
The effect of heat treatment on the mechanical properties and microstructure of Fe–30% Cu pseudoalloys doped with 10% Mo is studied. The samples were produced by compacting mechanically alloyed metal powder mi...
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Article
Determination procedure of the heat resistance of ceramics using radiant heating
A procedure for the comparative assessment of the heat resistance of ceramics using radiant heating in an URAN-1 optical furnace has been developed. To measure the specimen surface temperature, an IGA-100 high...
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Article
Diffusion processes and structurization in microwave sintering of BaTiO3–SrTiO3 and Al2O3–Cr2O3 powder systems with complete miscibility
The paper examines the compaction and structurization of equimolar BaTiO3–SrTiO3 and Al2O3–Cr2O3 powder mixtures with complete miscibility and monophase Al2O3 and Cr2O3 powders under microwave heating (24 and 30 ...
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Article
Effect of metal-layer structure on the mechanical properties of multilayer metal–ceramic composites. II. Heat resistance
The effect of the metal-layer structure and of the interface between the ceramic and metal components on the heat resistance of multilayer ceramic–metal composites is examined. The use of metal fabric layers s...
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Article
Effect of metal-layer structure on the mechanical properties of multilayer metal–ceramic composites. I. fracture energy
The effect of the metal-layer geometry and of the interface structure on the fracture toughness of multilayer metal–ceramic composites is examined. The samples are produced by free sintering of layups consisti...
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Article
Effect of microwave heating on diffusion in KCl–KBr single crystals
The interdiffusion in single-crystal KCl–KBr diffusion couples, which form continuous solid solutions, is examined under microwave heating (24 GHz). The results are compared with data obtained under convention...
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Article
Effect of molybdenum additives on the mechanical properties of iron-copper pseudoalloys
The effect of molybdenum additives (10%) on mechanical properties and the microstructure of iron-copper (Fe-30% Cu) pseudoalloys is investigated. The tensile strength, hardness, and electrical resistivity are ...
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Article
Features of skeletal composite compaction and sintering
Skeletal composites are prepared using highly porous cellular nickel as a volumetrically-bonded framework and features of their compaction and sintering are studied. The skeleton improves composite compactabil...
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Chapter and Conference Paper
Correlation Between Densification and β - Phase Formation at Microwave Sintering of Si3n4 Ceramics
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Chapter and Conference Paper
Densification and Diffusion Processes in the Ba,Sr-Titanate System under Microwave Sintering
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Article
Effect of microstructure on the mechanism of emission for tungsten-barium dispenser cathodes
The effect of tungsten powder fineness and microstructure parameters of the tungsten skeleton on the emission of dispenser cathodes (DC) in the stages of degassing and high-temperature activation are studied. ...
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Article
Nature of changes in the microstructure and properties of fine-grained iron-copper composites under heat treatment
We examine the nature of the changes that occur in the microstructure and properties of fine-grained iron-copper composites with 30 mass % (27.3 vol. %) Cu during solid-phase heat treatment and when passing th...
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Article
Consolidation processes in the sintering of fine-grained iron-copper pseudo-alloys
The properties of fine-grained iron-copper pseudo-alloys (ICPA) and consolidation processes that occur during their sintering are studied. The grains are no larger than 0.5 µm. It was established that the spec...
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Article
Properties of molybdenum powders obtained by reduction in moving beds
We have studied the process of decomposition of ammonium paramolybdate and reduction of the molybdenum oxides in moving beds with rotation of the working chamber. We have shown that agglomerated disperse molyb...