The article presents the results of a study of the mechanism of occurrence of cracks in the material of heated cylindrical porous powder blanks being deposited. The type of cracks is classified and the role of the boundaries between the "particles" of powder on the surface of a porous workpiece as stress concentrators contributing to the formation of cracks during its deformation is noted.

Keywords: dynamic hot pressing, heating temperature, powder billet, pore, crack, sintering temperature, plasticity

The article presents the results of studies on the influence of sintering modes on the distribution of carbon in the material of a porous powder billet used for the manufacture of a differential satellite by dynamic hot pressing. The distribution of carbon and density in the satellite material is established, recommendations for its chemical and thermal treatment are given.

Keywords: dynamic hot pressing, heating temperature, powder billet, density, satellite, sintering temperature, cementation, quenching, material property

The technologies for producing ultrafine copper powders are examined. The influence of various parameters on the processes of electrocrystallization of particles is studied. Various mechanisms for producing particles in the presence of water-soluble polymers are presented. The ultrafine copper powders obtained using different electrolysis modes. A review of advanced electrochemical methods for producing ultrafine copper powders with the addition of various stabilizers particle growth, further ways of developing the technology of these technologies are highlighted.

Keywords: ultrafine copper powders, electrocrystallization, production methods, particle stabilization, water-soluble polymers, double electric layer, vibrocathode

The article presents the results of studies of the plastic properties of heated porous powder materials in the sediment tests. A technique for determining the transverse dimensions of porous billets is given, which provides their defect-free dynamic hot pressing in the matrix.

Keywords: plastic property of the material, the study of deformability, ductility of the material, transverse deformation, heating temperature, calculation method, dynamic hot pressing, powder billet, transverse size of the workpiece and the matrix, the initial siz

The article presents the results of studies of the plasticity of heated powder materials from the initial porosity during the sediment tests. It was established experimentally that for the selected deformation conditions, the powder of iron powder PZh4S2 with the initial porosity of 20–30% has the greatest plasticity during the draft

Keywords: plasticity, heating temperature, density of samples, specific work of deformation, sediment, measurement of samples, coefficients of height and transverse deformation, porosity, powder billet

The paper presents the results of studies on the effect of deposition regimes on the properties of electrochemical copper powders. The obtained ultradispersed powders of copper and application of different regimes of electrolysis. The paper presents data on the possibility of obtaining ultrafine copper powders (UDP) in pulsed mode with the addition of polyvinylpyrrolidone (PVP) as a particle growth stabilizer. The influence of the current amplitude and the cathode-anode time ratio is revealed. It is shown that the parameters determining the current wave determine the size of the deposited copper powder particles.

Keywords: ultradispersed copper powders, particle size distribution, the parameters of the electrolysis of, kinetics of electrocrystallization

The article deals with the characteristics of hydrophobic swollen perlite and methods of its research. The perspective of the use of expanded perlite in various industries is described. Possibilities of application of these materials in practical use are shown.

Keywords: composite materials, energy saving, modification of perlite, hydrophobic perlite, methods for improving properties

The article examines the effect of polytitanate potassium intercalated copper on the structure and physico-mechanical properties of composite materials containing as a filler. Matrix composite material is a mixture of polyethylene 277 and copper-polymer complex of polyacrylamide. It is shown that the pre-intercalation of polytitanate potassium copper improve of physico-mechanical properties of the composite material.

Keywords: intercalated, polytitanate potassium, polyethylene, copper-polymer complex of polyacrylamide, friction coefficient, wear resistance, structure, hardness, elemental composition

Effect of water-soluble polymers additive and surface treatment on particle size distribution are shown in this article.

Keywords: electrolytic copper powder, water-soluble polymer, polyvinylpyrrolidone, polyacrilamide, electropolishing, atomic force microscopy

The article presents a comparative analysis of nanopowders of copper obtained by electrolysis with the use of the stabilizer polyvinylpyrrolidone (PVP). It is established that the properties of powders of copper determines PVP polymer film formed on the surface of nanoparticles

Keywords: Nanopowders of copper, stabilization of particles, granulometric composition, differential thermal analysis, water-soluble polymer

In the article methods of utilization of PET. The chemical method chosen by us is one the most priority types of the processing of plastic containers (bottles - PET). Also results of some physical and mechanical tests of the modified PET

Keywords: PET, chemical modification, polyisobutylene, recycling, extrusion

This article is dedicated to overview of additive technologies, Russia's place in the modern world of developing technology, a comparative analysis of existing technologies, made predictions about trends in the development of additive technology in our country

Keywords: additive technology, classification, 3-D-printing, machines, powders for additive technologies, selective laser sintering

The effect of two surface-active substances (SAS) - polyvinylpyrrolidone (PVP) and polyacrilamide (PAA) on formation kinetics of anodic synthesized electrolytes for copper powders production was reviewed, as well as product properties. It was found that the copper powder properties defined by polymer film of PVP and PAA formed on cathode surface. Nanosized particles percentage increasing by dints of copper ions direct discharge from ammonia complex ions provided by polymer film. In the electrolyte containing PAA is possible to obtain copper powder with nanosized (less 100 nm) particles content of 50,2%, average size in nanosized range is 43nm with needle-dendrite particle shape

Keywords: electrolytic copper powder, vibrating cathode, polarization curve, chronopotentiometry, potential dip after current tripping, particle size distribution, water soluble polymer, nanosized particle, ammonia chloride, polyvinylpyrrolidone, polyacrilamide, am

In this article methods of copper ultrafine powders stabilization from agglomeration and aggregation by water soluble polymer in process of production by electrolysis on vibrating cathode, as well as their effect on physical and mechanical properties of polymer composites.

Keywords: ultrafine powders, stabilization, friction coefficient, wear, structure of composite materials

Regularities of copper's Nano powders receiving by an electrolysis method in ammine electrolyte, with the soluble copper anode and the corrugated titanic cathode are investigated. With additional use of polyacrylamide as the stabilizer of particles' growth of Nano powder of polyacrylamide. It is shown that in the polyacrylamide's presence the share of Nano dimensional fraction of copper's powder raises and the contents in the final product of copper`s oxides decreases. To what Nano powders' roentgenograms testify.

Keywords: copper's Nano powder, electrolysis, part of electrolyte, phase structure

Some of the issues of a system approach to the development of composite antifriction coatings and also the phase desordered condition of the surface are considered

Keywords: tribology system, structural-phase disordered condition , composite coating, friction

Influence of the fluorinated surface-active substances entered info a solution of chemical nickel plating, on operational properties nickel-phosphoric of the coverings besieged from investigated structures (solutions) is considered.

Keywords: nickel-phosphoric of the covering; surface-active substances; operational properties