The paper investigates the influence of structural and phase parameters on the mechanical properties of the martensitic-aging steel VNC-17 of the Fe–Cr–Ni–Mo–Ti system. Transmission electron microscopy methods have shown that the structure of the VNC-17 steel, heat treated according to modes including quenching and aging, is characterized by the release of a fine Ni₃Ti phase, the existence of which is confirmed by studies of the phase composition by X-ray diffraction analysis. The revealed structural and phase features justify the choice of the heat treatment mode of the martensitic-aging steel VNC-17, which provides hardening without loss of plasticity.

The research conducted at the Kurchatov Institute Research Center – VIAM is devoted to the technology of manufacturing foam ceramic filters for cleaning the melt from non-metallic inclusions. In this part of the work, samples of filters based on aluminum oxide (III) and zirconium oxide (IV) were tested during remelting and casting of superalloys ZhS6U-VI and VX4L-VI on a vacuum induction furnace. The contamination was assessed and the chemical composition of the alloys after filtration was studied, and tests for mechanical properties were carried out. The full compliance of the properties with the requirements of the industry standard has been determined.

The article presents the results of research on several brands of partially hydrolyzed polyvinyl alcohol. Rheological characteristics (dependence of viscosity on temperature and activation energy of flow) of aqueous polymer solutions are determined. The completeness of the dissolution of polyvinyl alcohol was determined by optical microscopy. The types of foreign particles present in the solution characteristic of each method of dissolution and type of polymer have been identified. It has been established that the use of polyvinyl alcohol with a relatively low molecular weight is required to obtain technologically optimal solutions.

This work is devoted to a review of researches and developments related to the modification of asphalt concrete mixtures with various types of epoxy resins and hardeners. The development of the world economy is impossible without the use of new technologies in the construction of roads and bridges. One of the most effective options for modifying traditional asphalt concrete road pavements is the introduction of epoxy compositions into the bitumen composition. The main result of using epoxy asphalt is a noticeable increase in physical and mechanical characteristics and moisture resistance compared to a conventional asphalt.

Ceramic tooling is increasingly being used in the metallurgical industry, particularly in casting workshops of non-ferrous metals. Currently, various types of heat-resistant ceramics have been developed for injection molds and crucibles. Abroad, ceramics made from the natural mineral wollastonite, which also contains plasticizers and fluxing additives, are most often used for the manufacture of tooling. To obtain such products NRC «Kurchatov Institute» – VIAM has developed сeramics based on high silica fiber. In this paper, some aspects of the durability and criteria for evaluating their operational properties of ceramic products for the manufacture of tooling for continuous casting of aluminum are considered.

The production of SiC–ZrB₂–BN system ceramic materials by spark plasma sintering (SPS) at temperatures of 1850–1950 °C is presented. The SPS method made it possible to obtain a ceramic material with a homogeneous structure and a grain size of 0.5–3 μm. The influence of the amount of boron nitride on the machinability and oxidative resistance of ceramics was studied. It has been established that with a boron nitride content of 20 % (vol.), the ceramic material retains a high level of mechanical properties and a good degree of workability, however, it has low oxidative resistance.

The results obtained via the nondestructive evaluation of reaction-bonded silicon carbide components after the machining of carbonized and siliconized bodies are presented. It was shown that visual-optical and capillary tests are capable to detect the surface defects such as pores and cracks. More often the defects appear on type 1 and 2 components after milling. Extended linear indications, which are common for cracks, were not detected on type 3 components after having been sandblasted and grinded.

The work focused on determining the dependence of the anti-icing properties of coatings on hydrophobic properties. The coatings were applied by pneumatic spraying and did not have a clearly structured roughness structure. For the study, polymer coatings of various chemical natures were selected based on: organosilicon copolymer, copolymer of vinylidene fluoride and chlorotrifluoroethylene, fluoropolyurethane, epoxy varnish, acrylic copolymer, poly-dieneurethane with epoxy end groups and fluorosiloxane rubber. The dependences of ice adhesion on the contact angle of wetting, roughness and freezing time of water were determined.

In this paper, the physicochemical properties of resins of the Fenotam N210, Fenotam N210M, KMF-S, SFZh-3024 brands were studied. The samples of cured resins were tested for humidity and sorption moisture (moisture absorption) in accordance with the methods from GOST 17177–94. Optical microscopy in polarized light and X-ray diffraction have been used to determine the features of the structure of these resins. The dependences of the contact angle of the glass surface on duration of the study for liquid resins of the Fenotam N210M and KMF-S grades were obtained by the sessile drop method.

In this work, we determined the impurities of 43 elements in molybdenum using high-resolution glow discharge mass spectrometry. Sample preparation for analysis is described. To achieve maximum analytical signals from all the required elements, the appropriate equipment settings have been selected. Spectral interferences are eliminated due to the use of high resolution. The relative sensitivity coefficients were calculated for all determined elements using the X-ray fluorescence spectroscopy method.

The article provides a review one of the promising methods of non-destructive testing of parts made of ferromagnetic materials – the method of magnetic memory of metal. The physical foundations application possibilities, advantages and disadvantages of the metal magnetic memory method are considered. Examples of mathematical modeling of signals of the metal magnetic memory method, evaluation of residual stresses and comparison of the results obtained by modeling signals from possible defects with the results obtained in practice are given.

The article is devoted to the issues in the field of measuring the dielectric properties (permittivity and the tangent of the dielectric loss angle) of solid non-metallic materials using parallel plates (capacitor) at low frequencies. Two main methods (contact and non-contact), devices, equipment and software for measuring the permittivity and the tangent of the dielectric loss angle of solid non-metallic materials are described. The corresponding frequency ranges in which it is possible to measure the dielectric properties of solid non-metallic materials by the capacitor method are given.