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Article
Structural Changes and Diffusion in the Zone of Contact Deformation of Copper Alloys Under Friction
Calculation of diagrams of components of residual stress tensor arising in the surface layer of a tribomaterial under sliding friction is used to formulate ideas about the role of the medium in creating a plas...
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Article
Physicochemical Tribomechanics of Antifriction Materials Operating in Heavy-Loaded Friction Pairs in Active Lubricating Media
Within the framework of physicochemical mechanics (the Rehbinder effect), the problems of the plasticizing and strengthening effect of the lubricating medium on the near-surface layers of metal tribomaterials ...
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Article
Influence of Surface Layers Modified with Copper on the Performance of Steel–Steel Sliding Friction Couples
The features of the structural and tribotechnical characteristics of copper alloys and coatings during friction of a steel–steel pair are analyzed. Copper-based coatings obtained by gas-dynamic spraying have b...
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Article
Effect of Preliminary Treatment on Tribotechnical Characteristics of Nitrided Structural Steels
Tribotechnical characteristics of nitrided steels of pearlitic (38Kh2MYuA) and martensitic (16Kh2N3MFBAYu-Sh and 13Kh3N3M2VfB-Sh) classes are studied. The relation between the preliminary treatment of the stee...
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Article
Evaluation of Dynamic Parameters and Improvement of Wear Resistance of Involute Gears when Using Film-Forming Lubricants
The article describes the problems of existing methods for assessing the durability of involute gears (IGs) associated with determining the maximum permissible wear and predicting the occurrence of sudden fail...
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Article
Adaptation of the Structure of Subsurface Layers of Antifriction Copper Alloys during Friction with Various Lubricants
The structural parameters of subsurface microvolumes of copper alloys (intrinsic X-ray lines broadening and the solid solution lattice parameter, the degree of frictional hardening) during friction in the medi...
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Article
Operational Properties of Steel Friction Units with Copper-Alloy Antifriction Coating Formed via Electric Spark Alloying
Improving the operational reliability, durability, and safety of heavily loaded friction units is an urgent problem in physics, chemistry, and surface mechanics. The tribotechnical characteristics of coatings ...
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Article
Comparison of the Influence of High-Energy Surface Treatment Methods on Friction and Wear of a 30KhGSN2A Steel (CSN 16532)–30KhGSN2A Steel (CSN 16532) Pair
In this paper, we present the evaluation results of the tribotechnical characteristics of a dry friction pair of 30KhGSN2A steel (CSN 16532)–30KhGSN2A steel (CSN 16532) at pressures up to 350 MPa using KE-4 an...
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Article
Tribotechnical and Structural Characteristics of Copper-Modified Surface Layers of Heavy Loaded Couples
This study demonstrates the efficiency of copper-based coatings on steel of various composition upon friction under conditions of heavy loaded contacts in terms of interrelation between tribotechnical and stru...
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Article
Problems of Physical Metallurgy and Methodological Aspects of Their Solution in the Science of Friction and Wear
The methodological aspects of investigation of the structure and properties of the zone of contact deformation of metallic friction pairs are described as applied to solution of the problem of selection of tri...
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Article
Research of Friction, Wear, and Seizure Resistance of Extra High Loaded Nitrided Couplings
The paper presents the results of tribotechnical tests of nitrided and carburized steels according to schemes simulating heavily loaded couplings: a pair of reverse sliding friction at loads up to 40 MPa and a...
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Article
Dynamic Thermal Analysis of Structural Transformations in α-Titanium with Microimpurities
Structural and phase transformations at elevated temperatures in α-titanium containing trace nonmetallic impurities are studied by the methods of differential scanning calorimetry and x-ray diffraction analysi...
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Article
Structural Phase Transitions in α-Titanium Containing Nonmetal Microimpurities
Structural phase transitions occurring at elevated temperatures in α-titanium powder containing nonmetal microimpurities are investigated by differential scanning calorimetry, differential thermogravimetric an...
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Article
Nitriding of Structural Steels for Tribotechnical Destination and Complex Evaluation of the Quality of Treatment
We carried out structural and tribological investigations of steels and alloys after different modes of their nitriding. On the basis of the results of tribological tests and metal-physics investigations, we e...
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Article
Formation of Dynamic Structure of Surface Layers of Materials of Sliding Joints in Different Lubricating Media
Abrief review of reported data on special features of formation of structure in surface layers of metallic materials under contact deformation in active lubricants is presented. The factors affecting the kinet...
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Article
The Kinetics of Load-Bearing Capacity Formation of Sliding Pairings in the Use of Nanomodified Lubricants
The regularities of film formation on a friction surface using nanomodified lubricants are described. The nature of the two minima in the dependence of the coefficient of friction on load is discussed. It is s...
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Article
Methodological Foundations for Choosing the Materials for Gears according to Wear Resistance Criteria
Experimental data and analytical relationships for assessing the wear resistance of gearing materials are considered. The role of hardness and of plasticity reserve in determining the wear resistance level for...
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Article
The Influence of High-Pressure Gas Nitriding on the Properties of Martensitic Steels
The influence of high-pressure gas nitriding on the structure and properties of martensitic steels VKS-5, VKS-7, 20Kh3N3MFB, and 25Kh5M is investigated. It is shown that the high-pressure nitriding increases t...
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Article
Mixed-surface impregnation of gear wheels made of 13Kh3N3M2VFB-Sh age-hardenable integrally alloyed steel aimed at improving surface hardness, wear-resistance, and back-to-back endurance
An analysis has been carried out of mixed-surface impregnation of the 13Kh3N3M2VFB-Sh age-hardenable integrally alloyed steel consisting of successive vacuum carburizing, heat treatment, grinding and nitriding...
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Article
Methods for estimating the adaptive properties of mechanical systems as means of improving their performance indicators
The article proposes criteria and methods for estimating the adaptive properties of mechanical systems, such as sliding bearings, worm gears, and internal combustion engines. The examples of estimating the ada...
