Трение и износ, 2005, Vol.26, No.1
/ Издания академии / Научные журналы
Трение и износ, 2005, Vol.26, No.1
Том 26, номер 1; январь-февраль, 2005
СОДЕРЖАНИЕ
СТАТЬИ
Myshkin N.K., Petrokovets M.I., Grigoriev A.Ya., Kovalev A.V., Fominski V.Yu., Scharff W.
Scale factor in contact problems in tribology. pp. 5--14
Summary: Techniques of measuring different-scaled asperities are described and a method of separating different asperities presenting simultaneously on the real surface is proposed. Based on the analysis of the known contact models including the model of adhesion contact and the two-level model, the general algorithm of their construction is presented.
Semenov A.P.
A phenomenon of superlow friction of solids. pp. 15--19
Summary: The effect of superlow friction of solids observed experimentally is discussed the explanation is based on the fact that molecules and atoms of adsorbed or intercalated substances possess intensive mobility and behave like a bidimensional atom under certain conditions.
Dobychin M.N., Morozov A. V.
A model of wear of an elastic wheel in rolling. pp. 20--30
Summary: A model of wear of an elastic wheel in rolling on a rigid basey take place in the slip subregion and the wear rate is a pressure exponential function. The model allows for the variations of contact pressure in the contact spot, its dimensions and the slip subregion stretch.
Soldatenkov L.A.
A theoretical analysis of friction spontaneous oscillations under distributed contact loading. pp. 31--37
Summary: The results of a theoretical analysis of spontaneous oscillations in friction in a movable contact between a die and a fine elastic layer are disclosed. The numeric and analytical methods serve to study the effect of the pattern of distribution of contact pressure on the variation of the force of friction. The force of friction becomes asymptotic in case of attenuating spontaneous oscillations.
Sviridenok A.I., Meshkov V.V.
Sliding friction of polymeric composites at accelerated velocities. pp. 38--42
Summary: The results of a study of polymeric composite materials are shown in sliding friction at speeds up to 1 km/s. The regularities of friction of polymeric composites manifest that it is strongly affected by the structure, the sliding velocity, the phenomena of friction transfera and structural modification of surfaces of reinforcing fibers, the friction temperature governs the characteristics of highspeed friction and wear.
Rogachev A.V., Yarmolenko M.A., Sarkisov O.A., Rogachev A.A.
The effect of conditions of forming of composite polyurethane- and polytetrafluorine-based coating on triboen-gineering characeristics and structure. pp. 43--47
Summary: The effect of pre-treatment of the surface of butadiene-nitryl rubbers and conditions of subsequent application of PU-PTFE compositeoro coatings in the active gaseous phase is studied in relation to the triboengineering characteristics of modified materials. It is established that better characteristics are obtained when coatings are applied to the surface of rubbers in the active gaseous phase, i.e. when the dispersion products are activated in the glowing discharge plasma.
Serbin V.M.
Features of interactions between the elastomer and elastomeric pairs in sliding friction. Part 1. pp. 48--52
Summary: A design of the laboratory unit and a test method of elastomers in sliding friction are considered.
Levchenko V.A., Buyanovsky I.A., Ignatyeva Z.V., Matveenko V.N.
The 21st century nanoteechnologies: carbon coatings improving antifriction behavior of steels. pp. 53--57
Summary: The tribological properties of monocrystalline carbon coatings are studied. It is established experimentally that alloying of the above coatings steel specimens with nitrogen improves their antifriction behavior under various contact loads in friction without lubrication and in model lubricating media. Uncoated steel specimens are compared with the same coated with amorphous carbon (diamond-like). It is assumed what mechanisms can reduce friction when the monocrystalline carbon coatings are alloyed with nitrogen.
Melnikov V.G.
Performance and kinetic regularities of tribochemical transformations in the rolling friction zone. pp. 58--73
Summary: A systems analysis of the mechanism of tribochemical transformations of lubricating materials (oils and plastic greases) in the rolling friction zone are performed and basic trends of their consumption. The kinetic regularities of tribochemical degradation of plastic greases in the conditions of rolling friction are analyzed. The thermodynamic "plastic grease- ball bearing" system is treated as an open system in the unsteady state. This state features the total speed constant of tribochemical transformations in the grease dispersion medium as variable in time making problematic the mathematical description compared with the classic kinetic equation of the first order. It is proposed to apply the degradation kinetic equation to plastic greases that enables to predict the profoundness of tribochemical processes and the durability of a friction unit with acceptable accuracy.
Semenov V.I., Shuster L.Sh., Chertovskikh S.V., Raab G.I.
The effect of the complex parameter of the plastic friction contact and the material structure on the strength of adhesive bonds. pp. 74--79
Summary: The results of experimental studies to determine strength of adhesive bonds of metals and alloys in friction on tool steel P18 are discussed with the allowance for the complex parameter of plastic friction contact (PFC) that takes into consideration the surface energies of contacting bodies and hardness of a plastically deformable specimen. The effect of the structure and temperature on the strength of adhesive bonds and the complex PFC parameter is rated.
Chertovskikh S.V., Shuster L.Sh., Stolyarov V.V.
Triboengineering properties of nitinol produced by intensive plastic deformation. pp. 80--83
Summary: A method and results of an experimental study of triboengineering behavior of super fine granular nitinol (Ti49.7 Ni50.3) obtained by intensive plastic deformation, are discussed, including the parameters of adhesion (the molecular component of the friction coefficient, the shear strength of adhesive bonds, etc.) at various contact temperatures and loads. Appearance of the super fine granular structure in the alloy Ti49.7 Ni50.3 improve its strength characteristics, reduces the adhesive (molecular) component of the friction coefficient and tendency to seizure in the process of friction.
Antonjuk V.E.
The effect of dynamic stabilization of friction disks on their performance. pp. 84--89
Summary: Basic requirements to fabrication of friction disks are outlined and their production process is analyzed. The process of dynamic stabilization is analyzed and the results of higher precision of fabrication friction disks are disclosed by applying dynamic stabilization. The results of comparative stand tests of friction disks after dynamic stabilization are demonstrated.
Makarenko N. G.
Improving durability of tribosystems by autocompensation of wear of rubbing surfaces. pp. 90--93
Summary: A possibility is described of improving durability of components of tribosystems in machines and mechanisms by the method of wear self-compensation using external energy to produce a material for reconditioning and to transfer it in the contact zone.
Kozhevnikova G. V.
Plotting the contact stress epures at the interface between the tool and workpiece during cross rolling. pp. 94--99
Summary: The approximating functions are determined and epures of distribution of normal and tangent stresses in the in the interface between the tool and blank are plotted in cross rolling.
Shejnman E. L.
Abrasive wear. A review of American press. pp. 100--111
Summary: The review covers the data about the relation between abrasive and other types of wear and relevant costs. The American classification of abrasive wear varieties is specified and terminological features are explained. The American version of the abrasive wear mechanism, the effect of major parameters, such as hardness, the modulus of elasticity, viscosity of failure of the material, dimensions and shape of abrasive particles, loading, friction track and sliding velocity, on wear are specified. Papers are listed describing recent results of studies of abrasive wear in American publications.
КАЛЕНДАРЬ КОНФЕРЕНЦИЙ. p. 112
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Created with assistance of Dr. Ignatii I. Korsak
Copyright © 2005 The National Academy of Sciences of Belarus
Copyright © 2005 The V.A.Biely Institute of Mechanics of Metal-Polymer Systems
