Трение и износ, 2002, Vol.23, No.5
/ Издания академии / Научные журналы
Трение и износ, 2002, Vol.23, No.5
Том 23, номер 5; сентябрь-октябрь, 2002
СОДЕРЖАНИЕ
СТАТЬИ
Kim V. A., Kurgachev R. V.
Fractal parametrization of wear. pp. 471--476
Summary: Self-organization manifests itself at all levels of tribosystem including wear debris formation. An attempt is made to apply fractal formalization to the description of dimensional distribution of wear debris. It is shown that fractal dimension can be calculated by the distribution of wear fragments and makes possible predicting a number of dissipative tribojoint properties.
Krupich B.
Challenges in provision of the wear resistance of pneumatic transport parts. pp. 477--482
Summary: The results of the theoretical and experimental studies of wear of fan blades in pneumatic transport are presented. Mathematical models for contact interaction of disperse particles with a fan blade are suggested for the zones of impact and friction sliding contact.
Markov D. P., Kelly D.
Adhesion-initiated types of catastrophic wear. pp. 483--493
Summary: The authors develop the theory of adhesion-initiated types of catastrophic wear on the basis of correlation between deformation mechanisms and wear mechanisms. Also the phonon hypothesis of friction force excitation and energy and heat transfer at the microlevel as ajustification for transition from dislocation to disclination modes of plastic deformations to amorphous one.
Nachovny I. I., Burya A. I., Kuzyaev I. M., Ploshenko I. G.
Elastic contact of microirregularities of metal-polymer couple in calculating seal leak-proofness. pp. 494--497
Summary: A problem of gaseous medium flow through a porous joint formed by the elastic contact of microirregularities has been solved under linear variation of the joint height and the penetration factor on its length. Neglect of elastic recovery of microirregularities in elastic contact is shown to result in considerably reduced figures for gas leakage.
Starostin N. P., Kondakov A. S., Kondakov A. A.
Recovery of friction torque in a polymer sliding bearing by temperature measurement. pp. 498--508
Summary: The method of heat diagnosis of friction previously suggested is extended to the case of temperature dependence of thermal characteristics. The computing experiments with model problems have shown the efficiency of the recovery of heat release intensity function and friction torque, respectively, by the temperature data.
Ivasyshin G. S.
Experimental study of the regularity of additivity of the elastic post-effect of tangential displacement. pp. 509--514
Summary: The regularities of the additivity of the elastic post-effect of tangential displacement are discussed. The experimental study was performed using the method of the profiled coordinate grid.
Avsievich A. M., Spiridonov N. V., Konstantinov V. M.
Wear resistance of plasma sputtered coatings from diffusive alloyed iron-based self-fluxing powders. pp. 515--519
Summary: Wear resistance of plasma sputtered coatings from diffused alloyed ion-based self-fluxing powders has been studied because they represent a new type of materials used for gas thermal sputtering. The wear resistance of these coatings has been compared with the coatings from a nickel-based powder composition during friction with and without lubrication.
Gershman I. S., Trushevskii S. M., Shumitskii A. V.
The role of carbon in self-organization of the process of wear of strong-current sliding electrical contacts. pp. 520--523
Summary: The mechanisms of self-organization on the working surface of sliding electrical contacts are considered. It is shown that carbon plays a leading role in these processes.
Devoino O. G., Dorozhkin N. N., Kardapolova M. A., Dyachenko O. V.
Features of wear of Ni--Cr--B--Si composite coatings after laser modification by nitrides. pp. 524--528
Summary: Friction and wear of composite coatings of self-fluxing alloys Ni--Cr--B--Si have been studied using scanning electron microscopy and X-ray analysis before and after wear. The coatings were produced by plasma spraying and laser treatment accompanied by nitride slip covering.
Legostaeva A. E., Sharkeev Yu. P.
Regularities and mechanisms of molybdenum ion-implanted ferrite-perlite steel. pp. 529--536
Summary: The results of a complex comparative investigation of micro- and mesostructure, wear debris morphology, tribological behavior and mechanics of plastic deformation under friction of steel 45 in the initial and ion-implanted states are presented. A new approach to the description of plastic deformation and destruction under friction was introduced on the basis of the concept of structural levels of plastic deformation and physical mesomechanics. The formation of the modified structural-phase state in the surface layer of the Mo ion-implanted specimens is shown to prevent the fragmented structure formation at the mesolevel and retard the vortex movement of mesofragments in the subsurface layer, thereby decreasing the intensity of the debris particle formation and improving wear resistance.
Mashkov Yu. K., Baibaratskaya M. Yu., Kalistratova L. F., Mamaev O. A., Lipina N.A.
Improvement of service characteristics of PTFE-based composites by optimization of their composition and technology. Part II. Effect of technological conditions on mechanical and tribological properties of the composites. pp. 537--542
Summary: The effect of technological conditions for polymer composite materials production on their structure as well as mechanical and tribological properties is discussed. The properties and permolecular structure is shown to relate to technological process conditions.
Makarov A. V., Anisimova L. I., Korshunov L. G.
Effect of large hydrogen concentrations on tribological behavior of b-titanium alloy BT35. pp. 543--550
Summary: The influence of preliminary hydrogen absorption (0.10...0.65 mass %) of b-titanium alloy BT35 on the wear resistance and the friction coefficient has been studied under unlubricated sliding friction and loading with a hard-alloy indenter, in similar couples and under abrasive wear. Positive hydrogen effect on the alloy wear resistance is proved. The influence of the oxidative (air) and neutral (argon) media on the tribological behavior and deformation hardening of the alloy in sliding friction is discussed.
Skaskevich A. A., Gotsko A. S., Mikhailova L. V.
Low-filled tribological nanocomposites on thermoplastic matrices. pp. 551--555
Summary: Tribological behavior of low-filled polymer composites modified by high-disperse fillers has been studied. The features of their structure formation are discussed.
Smirnov V. V., Pleskachevskii Yu. M., Aderikha V. N., Kurash A. V., Stankevich V.M.
Effect of load on the friction coefficient of high-density polyethylene irradiated in air. pp. 556--559
Summary: The effect of load on the friction coefficient of high-density polyethylene (HDPE) irradiated in air has been studied. In contrast to the initial HDPE the load dependencies of the friction coefficient for the irradiated HDPE are distinctly extreme which is due the polymer surface layer gradient and high-elastic properties of the space cross-linked HDPE developed at increased friction temperatures (loads).
Takhtarova Yu. A., Shakhnazarov T. A.
Stabilziation of the structure and antifriction characteristics of the aluminium-lead alloy. pp. 560--565
Summary: The effect of oxidation on the friction and wear of the aluminum-lead alloy has been studied. It is shown that introduction of elements easily soluble in lead and practically insoluble in aluminum is an effective means to prevent intensive oxidation of lead on the surface of the alloy in friction. This stabilization of the lead crystalline lattice with indium and bismuth noticeably influences the antifriction characteristics of the alloy in question. Indium produces a stronger effect. When indium concentration in the aluminum-lead alloy is increased, saturation is prevented. It is recommended to add indium within I % by mass.
Fadin Yu. A., Bulatov V. P. †, Kireenko O. F.
Interrelation between wear and energy consumption under dry friction of metals. pp. 566--570
Summary: On the basis of the physical model of intermittent sliding under adhesive wear a direct interrelation between wear and friction diagram is found under dry friction of an aluminum alloy pin against a steel disc. To determine the mechanical work spent on friction by the area under the friction diagram it is suggested to take into account only those regions where the friction torque and coefficient increase, i.e. correspond to the rubbing surface microseizure periods. A linear dependence of the mass of the material deformed and fractured in friction on the friction work calculated by the method suggested is obtained. It enables one to estimate the residua] life of the tribojoint by the friction diagram.
Yakhyaev N. Ya.
The effect of the parameters of operation of internal combusiton engines on the wear of cylinder liners. pp. 571--574
Summary: A formula is proposed to calculate the wear of cylinder liners of various internal combustion engines obtained by formulating conditional linear equations based on the simplified Gaussian algorithm and reduced to normal equations. The new formula enables to predict wear with the accuracy sufficient for practical purposes. The wear of cylinder liners is determined as a function of the friction coefficient, generalized criteria of contact temperature augmentation, Peclet numbers, and volumetric temperature incrementation. A method has been developed to obtain formulas for calculating wear of basic parts of various engines and machines.
НЕКРОЛОГИ
Vladimir P. Bulatov. p. 575
Dmitrii V. Orlov. p. 576
КАЛЕНДАРЬ КОНФЕРЕНЦИЙ. pp. 577--578
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Designed and maintained by Dr. Nikolai N. Kostyukovich. Last updated: May 15, 2003
Created with assistance of Dr. Ignatii I. Korsak
Copyright © 2002, 2003 The National Academy of Sciences of Belarus
Copyright © 2002 The V.A.Biely Institute of Mechanics of Metal-Polymer Systems
