The technology of coatings deposition with thickness up to 5 micrometers on the activated surface of steel shot is developed. The composition and arrangements of layers in covering of the steel shot intended for modification of steel are chosen.

It is proposed to use the J-integral criterion that takes into account the plastic deformation at the crack tip for layered materials based on high-strength steel 38HN3MFA alloys and erosion resistant cobalt alloy ЭП 131, molybdenum alloy MT, which are destroyed according to the laws of elastic-plastic mechanics. The experimental technique for determining and numerical calculation of energetic J-integral has been described. Numerical modeling of the destruction process has shown good convergence with experimental researches. There was shown that the high-velocity deformation at explosive processing of steel forms structure with high parameters of strain crack toughness and significant increase of yield strength of a material.

It is offered to use the J-integral, which considers the plastic deformation at the crack tip, for layered materials based on high-strength steel Z8HN3MFA and erosion-resistant cobalt alloys EP131 or molybdenum alloy MT, which collapse under the laws of elastoplastic mechanics.

Coating structure formation under magnetron spraying of titanium and carbon cathodes and combined cathodes, namely cobalt (EP 131) – nickel, tungsten – carbon have been investigated under conditions of carbide separate synthesis within the temperature range of 650–1200 °C. Usage of cobalt and nickel particles as matrix material leads to their rapid thermal expansion under heating during sintering process in the dilatometer. Subsequent plastic deformation of sintered samples provides obtaining a composite powder material that is a composite with framing structure of cobalt, titanium and tungsten carbides in the coatings.

A technology has been developed to obtain porous powder materials on the basis of spherecal powder particles of 12Х18Н10T сorrosion-resistant steel by technological coating deposition on them –condensate from layered and composite Si and (Si + C) or Si and (Mo + Si) nano-layers. Their deformation at points of spherical particles contact creates press forming conditions with sufficient strength rate at pressure below yield point of steel powder (below 200 MPa). The subsequent sintering occurring with an exothermic reaction in the coating ensures particle sintering in their local heating within 1100–1200 °С temperature range.

A technology has been developed to obtain porous powder materials on the basis of spherecal powder particles of 12Х18Н10T сorrosion-resistant steel by technological coating deposition on them –condensate from layered and composite Si and (Si + C) or Si and (Mo + Si) nano-layers. Their deformation at points of spherical particles contact creates press forming conditions with sufficient strength rate at pressure below yield point of steel powder (below 200 MPa). The subsequent sintering occurring with an exothermic reaction in the coating ensures particle sintering in their local heating within 1100–1200 °С temperature range.

Production of porous powder materials from spherical powders of corrosion-resistant steel 12Х18н10Т with formation at low pressures 120-140 mpa in the mold with the subsequent activated sintering became possible due to increase of duration of process of spattering and formation of condensate particles (Si-C) or (Mo-Si) on surface.

Structure formation in laminated coatings (Si + C) and a cobalt alloy ЭП 131 on magnetronically sprayed diamond crystals with subsequent heating in a dilatometer up to 1400 °C is accompanied by formation of amorphous and crystal SiC-layer within temperature interval of 650–850 °С and a layer of cobalt ЭП-alloy. Adding of KCR06-hard alloy granules in furnace charge leads to sintering of tungsten carbide inside of the granules and with diamond crystals through SiC coating and alloyed cobalt binder at temperature of 1400 °C.

Coating structure formation under magnetron spraying of titanium and carbon cathodes and combined cathodes, namely cobalt (EP 131) – nickel, tungsten – carbon have been investigated under conditions of carbide separate synthesis within the temperature range of 650–1200 °C. Usage of cobalt and nickel particles as matrix material leads to their rapid thermal expansion under heating during sintering process in the dilatometer. Subsequent plastic deformation of sintered samples provides obtaining a composite powder material that is a composite with framing structure of cobalt, titanium and tungsten carbides in the coatings.

Investigations of morphology of surface deterioration of sintered powders with covering are reflected. It is shown that formation of structure and characteristics of composite material is determined considerably by state of the surface and structure of particles covering.

The paper presents results of graphite surface morphology research and graphite structure improvement (density increase) in nano-coatings of iron alloy powders while making isothermal heating up to 1200 °С and plastic deformation caused by tensile stress due to significant difference in iron and graphite thermal expansion coefficients. Framework structure formation of squeezed graphite on iron-group metal particles makes it possible to obtain composite powders for preparation of erosion-resistant composite materials.

The paper presents results of graphite surface morphology research and graphite structure improvement (density increase) in nano-coatings of iron alloy powders while making isothermal heating up to 1200 °С and plastic deformation caused by tensile stress due to significant difference in iron and graphite thermal expansion coefficients. Framework structure formation of squeezed graphite on iron-group metal particles makes it possible to obtain composite powders for preparation of erosion-resistant composite materials.

The paper presents investigation results concerning evaluation of influence of technological parameters of composite cathode spraying in a planar magnetron spraying system on structure formation and properties of layer nano-coatings (Si + C) of diamond micro-powders . a-SiC formation reaction was proceeding in the nano-layer (up to 20nm) presenting Si + C atom or cluster mixture of amorphous structure being treated with glow-discharge plasma. The layer coating has been obtained as a result of subsequent deposition on it the following elements: Si + C and Al of the given thickness (up to 300nm and 10nm, respectively) and also outside layer of pyrolytic carbon. The coating has ensured diamond protection against graphitation while heating and formation of carbide-silicon matrix. The composite of silicon diamond-carbide obtained on the basis of diamond powders with a layer coating with the help of a method that presupposes impregnation with liquid silicon and reaction sintering is characterized by improved properties.

The paper presents investigation results concerning evaluation of influence of technological parameters of composite cathode spraying in a planar magnetron spraying system on structure formation  and properties of layer nano-coatings (Si + C) of diamond micro-powders . a-SiC formation reaction was proceeding in the nano-layer (up to 20nm) presenting  Si + C atom  or cluster mixture of  amorphous structure being treated with glow-discharge plasma. The layer coating has been obtained as a result of subsequent deposition on it the following elements: Si + C and Al of the given thickness (up to 300nm  and 10nm, respectively) and also outside layer of pyrolytic carbon. The coating has ensured diamond protection against graphitation while heating and formation of carbide-silicon matrix. The composite of silicon diamond-carbide obtained on the basis of diamond powders with a layer coating with the help of  a method that presupposes impregnation with liquid silicon and reaction sintering  is characterized by improved properties.

The paper presents investigation results concerning evaluation of influence of technological parameters of composite cathode spraying in a planar magnetron spraying system on structure formation and properties of layer nano-coatings (Si + C) of diamond micro-powders. a-SiC formation reaction was proceeding in the nano-layer (up to 20nm) presenting Si + C atom or cluster mixture of amorphous structure being treated with glow-discharge plasma. The layer coating has been obtained as a result of subsequent deposition on it the following elements: Si + C and Al of the given thickness (up to 300nm and 10nm, respectively) and also outside layer of pyrolytic carbon. The coating has ensured diamond protection against graphitation while heating and formation of carbide-silicon matrix. The composite of silicon diamond-carbide obtained on the basis of diamond powders with a layer coating with the help of a method that presupposes impregnation with liquid silicon and reaction sintering is characterized by improved properties.