Fluorine containing diamond-like carbon (DLC) coatings were obtained by CVD deposition using the destruction of gaseous hydrocarbons by a high-energy ion source with an anode layer. The chemical composition, structure, surface energy, mechano-tribological characteristics of the synthesized thin-film material were studied. It has been shown that the fluorine content in the deposited coatings reaches 31 at.%. It has been established that the presence of fluorine in the DLC coating promotes the formation of nanodispersed graphite-like structures. Fluorine containing coatings with a high content of sp2 hybridized carbon atoms and graphite fragments show a decrease in hardness. Such coatings have a very low coefficient of friction at the level of 0.03–0.07 due to the low surface energy, which can be reduced by 1.5 times compared to pure DLC. It has been established that different fluorine contents in thin-film diamond-like carbon material have different effects on the interaction of the DLC coating with polar/non-polar dielectrics. The research results can be used for the technology of producing solid lubricants in friction units of machines and mechanisms, and are also of interest for medicine, the food industry, the production of plastics, and chemical fibers as chemically inert and corrosion-resistant coatings.

The article presents the results of a study of the physical and mechanical characteristics of additive coatings obtained by a combination of methods of electrophysical surfacing and electrospark alloying. The issues of structural transformations during the creation of coatings by the method of additive technologies are considered. It has been established that the chemical composition of the electrodes used has a fundamental influence on the strength and tribotechnical characteristics of the coatings. The formation of both superhard phases in the resulting hybrid coatings and phases with a layered structure characterized by high tribotechnical characteristics is observed. The composition of the coatings, the technological modes of their production have a significant impact on the values of the specific surface energy. When using the proposed technology for obtaining coatings, it is possible to form nanostructures in the matrix of additive coatings. The use of this technological method can significantly improve the physical and mechanical characteristics of superhard coatings.

The article presents the results of studies of the rheological and tribotechnical properties of lubricants based on polar and nonpolar liquids modified by nanodisperse carbon particles obtained by self-propagating high-temperature synthesis. It was found that the introduction of nanodispersed carbon particles into the lubricant medium leads to changes in the viscosity and tribotechnical characteristics, and at low concentrations of the modifier, the most significant decreases in the values of the coefficient of friction are observed in comparison with the initial lubricant.

Применение вакуумных покрытий позволяет существенно изменить физико-механические характеристики модифицируемых металлических субстратов. Целью работы является исследование структуры и физико-механических характеристик вакуумных покрытий на основе хрома, осажденного на стальные субстраты. Рассмотрены структура, морфология и физико-химические характеристики вакуумных нанокомпозиционных покрытий на базе рефракторных металлов и их соединений. Показано, что химический состав покрытий оказывает существенное влияние на адгезионные, триботехнические и теплофизические свойства. Исследованы триботехнические, антиадгезионные покрытия на основе хрома. Применение вакуумных покрытий на базе исследованных рефракторных металлов приводит к улучшению физико-механических характеристик модифицируемых стальных субстратов. Установлено, что формирование на поверхности покрытия фторсодержащих соединений приводит к созданию покрытий с оптимальными триботехническими характеристиками.

Electrospark alloying (ESA) of conducting surfaces of solids is a promising direction for increasing the operational properties of materials at the present time. The formation of coatings of superhard materials on a substrate can significantly increase the hardness, wear resistance, resistance to high temperatures and pressure. This article investigates the chemical composition, structure, physical and mechanical characteristics, morphology of coatings formed on metal substrates. It was found that the technological parameters of the formation of electrospark coatings have a significant effect on the morphology, structure, and physical and mechanical characteristics of the modified materials. The structure of the protective layers depends significantly on the chemical composition of the electrodes. MAX phases are formed in ESA coatings.

Статья посвящена вопросу воздействия низких температур на наноуглеродные покрытия, сформированные на стальных субстратах. Применение алмазоподобных покрытий широко распространено в машиностроении в качестве антифрикционных, антиадгезионных слоев. Проведение дополнительной обработки при криогенных температурах должно улучшать эксплуатационные характеристики вакуумных покрытий. Исследованы морфология, физико-механические характеристики углеродных вакуумных покрытий, сформированных на стали Р6М5, подвергнутых обработке при криогенных температурах. Изучены структурные превращения, происходящие в вакуумных покрытиях, сформированных на стальных подложках с последующей обработкой при пониженных температурах. Показано изменение физико-механических характеристик алмазоподобных покрытий, сформированных на стальных субстратах, подвергнутых обработке в криогенной жидкости.

We have used IR spectroscopy and x-ray diffraction to study "mechanocomposites" obtained by joint mechanical activation of polymers (polyamide, Sevilen, and poly-N-vinylpyrrolidone) with nanosized silicon dioxide in a highenergy ball mill. We have established that for < 10 wt.% polymer in the initial mixture, mechanocomposites are formed with chemical bonding between components via bridges of adsorbed water.

The products of the joint mechanical activation of kaolinite with polymers (Sevilen, poly-N-vinylpyrrolidone and polyamide PA-6) in a high-energy ball mill were studied by means of IR spectroscopy and Xray phase analysis. It was established that for definite polymer content of the initial mixture the mechanochemical interaction of kaolinite with polymer occurs, and the chemical bond is formed between them.

Mechanical activation of the inorganic polymer fl int and its mixtures with sevilen and polyamide polymers and SiO2 nanoparticles was studied using IR spectroscopy and x-ray phase analysis. It was found that active acidic centers appeared on the fl int surface during mechanical activation. Adsorbed water did not form H-bonds to them. Sevilen reacted with fl int during mechanical activation. SiO2 nanoparticles did not affect mechanical activation of flint. Polyamide did not react mechanochemically with flint, in contrast with sevilen.

The paper considers the study of the mechanism of nanophase transformations in metal-polymer composite materials based on thermoplastic matrices. It is shown that the reversible transition nanometal + polymer → metal-containing high-molecular compound, which results from the transformation of the adsorption bonds between the components into valent bonds, improves the performance characteristics of articles made of metal-polymer composites, including their wear resistance.

It is investigated phase structure of nanocomposite materials based on mixes of thermoplastic metal-polymers. Influence of initial and transformed structure on composites deformation-strength characteristics by effect of normal and elevated temperatures is shown.