Ìåæäóíàðîäíûé íàó÷íûé æóðíàë
Èçäàòåëü: Èíñòèòóò ìåõàíèêè ìåòàëëîïîëèìåðíûõ ñèñòåì èì. Â.À. Áåëîãî ÍÀÍ Áåëàðóñè, Ãîìåëü, Áåëàðóñü
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ÒÐÅÍÈÅ È ÈÇÍÎÑ Ìåæäóíàðîäíûé íàó÷íûé æóðíàë Èçäàòåëü: Èíñòèòóò ìåõàíèêè ìåòàëëîïîëèìåðíûõ ñèñòåì èì. Â.À. Áåëîãî ÍÀÍ Áåëàðóñè, Ãîìåëü, Áåëàðóñü |
Zharov I.A.
The choice of the coefficient of the vinkler base in the vicinity of the contact spots in the wheel -- rail pair. pp. 584--587
Summary: Formulas are proposed for the relationship between the reaction of the Vinkler base and mutual penetration of surfaces in case of several adjacent or coalescent contact spots.
Yevtushenko A.A., Semerak V.M.
Determination of the temperature of the sliding wheel-on-rail system. pp. 588--594
Summary: A numerical solution of the Ling problem has been obtained for a bidimensional temperature field initiated by a fast moving distributed heat flux. It is manifested how to apply the results to the wheel-on-rail tribosystem. A numerical analysis is performed.
Tkachuk D.V.
Temperature field in the subsurface layers of materials in high-speed friction contact. pp. 595--598
Summary: The paper deals with the temperature measurement in the thin subsurface layer of rubbing bodies by optical-electron scanning technique. The effect of coefficient of friction and thermal characteristics of the materials on the temperature field has been studied,
Bulanov E.A.
Wear of tooth gears. Part II. Wear of lubricated gears in the presence of abrasive impurities. pp. 599--603
Summary: A major regularity of the wear of tooth gears in the presence of abrasive impurities is advanced based on the mechanism of friction fatigue. Experimental studies of wear of lubricated tooth gears have corroborated the advanced regularity.
Tarasov V.V.
Methodological aspects of investigating anisotropic friction. pp. 604-606
Summary: Some methodological aspects are discussed how to perform tests when investigating anisotropic friction.
Gromyko P.N., Statsenko A.A.
Planetary precessional transmission parameters optimization on the criterion of minimal mechanical power losses. pp. 607--612
Summary: The questions of planetary precessional transmission design optimization on the basis of reducing power losses have been considered in this work. Mathematics model for determination of the relative power losses in the interacting parts of the transmission has been obtained. The program for carrying out the optimization has been developed with accordance of the mathematics model. It has been determined that skewed crank angle causes the greatest influence on the power losses value in the engagement of planetary precessional transmission. The friction losses in the points of interaction as well as in the driving shaft bearing units have been defined. Planetary precessional reduction gear machines have been designed as a result of the optimization carried out. These very units have passed tests successfully under laboratory as well as maintenance conditions.
Ahn H.-S., Chizhik S.A., Dubravin A.M.
Atomic force microscopy of friction surface of TiN. pp. 613--622
Summary: The paper ànà1ózås surface of TiN coating and its changes during the sliding against steel. The investigation was performed with the help of atomic force microscope in "tapping mode" using phase imaging. Friction was shown to result in smoothing the coating structures. Worn surfaces of TiN coating are characterized by areas of four types that were observed during the study. They are (i) rigid material of the coating, (ii) steel wear debris accumulated in the relief valleys, (iii) steel plastically spread on the relief slopes, and (iv) soft tribochemical films with thickness up to 5 nm on the asperities tops. Comparison of the AFM data and results of computer simulation of the contact zone indicates that friction of TiN coating against steel is characterized by joint abrasive, adhesive and chemical wear. Meanwhile, the most profound is adhesive wear accompanied by the transfer of steel to TiN surface.
Gershman I.S., Bushe N.A.
Instability of a tribosystem with current collector in the process of self-organization. pp. 623--629
Summary: Thermodynamic instability of a friction system with a current: collector is analyzed using the Lyapunov theory. It is demonstrated that such system may lose stability in case the current collected is changed or contact resistance reduces in response to current rise.
Kukareko V.A.
Role of precipitations in form tribological characteristics of precipitation-hardening alloy CrNi77TiAlB. pp. 630--638
Summary: Effect of a volumetric fraction particles of g'-phase and its size upon tribological characteristics of precipitation-hardening alloy CrNi77TiAlB has been investigated. Structural transformations in the zone of friction Contact have been investigated with X-ray analysis and TEM. It has been established that precipitation of g'-particles increases alloy hardness and it wear resistance at abrasion and dry friction. In a mode of friction with lubrication greatest wear resistance has the alloy in homogenous (single-phase) condition. The precipitation of g'-particles results in destruction of oxides layers on surfaces of friction and increases of wear processes of alloy.
Starostin N.P., Shitz.E.Yu., Adrianova O.A.
Organic based abrasive diamond tools use and allowable processing regimes operational choice. pp. 639--646
Summary: Using the method of thermal friction diagnostics a method of fast selection of permissible machining conditions with a diamond abrasive tool is advanced using the specimen-on-disk configuration.
Antsiferov V.N., Oglesneva S.A., Shatsov A.A.
Optimization of binder for diamond instrument by express-method quality evaluation. pp. 647--652
Summary: It have been worked out the express-method for determination of specific expenditure diamond. It effectively reflect the results of industrie tests. Principals of creation of diamond instrument with abnormally high explotation characteristics have been suggested. The problem of rising quality of diamond instrument have been solved by the mechanical alloying of phosphosus steel, low-temperature infiltration by bronze, organization of deformation phase transition on the contact surface. A new approach to the creation of diamond instrument doesn't requare traditional operations, such as sintering under the pressure or hot deformation.
Leshchik S.D., Struk V.A.
The effect of the ultradispersed diamond phase upon the tribological behavior of coatings based on galvanic chrome. pp. 653--659
Summary: The effect of addition of ultradispersed diamond upon the behavior of electrolytic chrome-based coatings has been investigated. It has been established that the surface morphology, microhardness, parameters of wear and scoring resistance after such addition improve compared with the corresponding parameters of the basic coating. In particular, the mass wear of modified coatings in friction without and with lubrication reduces 1.5 to 3 times, the friction coefficient by 10 to 20%.
Krasnov A.P., Afonicheva O.V., Klabukova L.F., Makarova T.N., Biryukbaev T.T.
Evolution of polyamide-6 friction surface filled with modified natural hydroxiapatite. pp. 660--663
Summary: The effect of polyacrylic acid as a modifier upon the structure of emerging interphase layeis, mechanophysical parameters, friction and wear of polyamide-6 filled with natural hydroxiapatite are analyzed. It is demonstrated that the surface polarity is most essential in friction. Reduction of surface polarity is positive for friction and wear of filled polyamide-6.
Mikhnevich N.N., Pleskachevskii Yu.M., Smurugov V.A.
Investigation of rheodynamics of polimer-containing separating lubricating. pp. 664--668
Summary: Results of experimental studies of the rheological characteristics of polymer-containing lubricants using the method of "layer package" are disclosed showing that the lubricating layer in the contact zone is an elastoviscous system. The ultimate fluidity and the modulus of elasticity have been measured for a number of lubricating compositions. A rheological model of elastoviscous plasticity in the contact zone has been constructed.
Petrov S.V., Rogachev A.V., Shchebrov A.V., Potekha V.L.
Study of the mechanism of periodic modifications of linear sizes of rubber-metal triboconjunctions during friction. pp. 669--673
Summary: It is shown that the main reason of periodic modifications of linear sizes of rubber-metal pairs of friction is the modification of adsorption properties of a surface during contact interaction. The plotting of a cover on a friction surface in an active gas phase allows to stabilize work of a knot and to reduce wear, and force of friction.
Savanchuk R.V.
Diagnostics of the process of hydrogen wear of friction units of machines and mechanisms. pp. 674--677
Summary: An apparatus has been designed with an integrated system of registration of analytical signals employing a solid electrolytic detector for fast analysis of hydrogenation of friction units and devices. Methods of three-dimensional and local analysis of triboengineering hydrogenation of metallic friction units have been elaborated which include distribution of hydrogen in the gas phase of the friction apparatus, determination of the diffused migrating hydrogen typical for volume hydrogenation of metallic specimens, investigation of local hydrogen distribution in steel and its redistribution after triboengineering tests.
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