Use of Modern Materials in Technological Processes Accompanied by Frictional Heating (Volume II)

Dear Colleagues,

Friction is widely used in grinding, welding, cutting, and other technological processes. Thermal phenomena accompanying friction have a decisive influence on both the course of these processes and on the quality of the result. Due to the extensive use in the industry of alloys based on magnesium, titanium, and aluminum, as well as new marks of steel and other materials sensitive to thermal effects, the thermal processes of friction are extremely important. In particular, it is necessary to note the use of friction during braking. The frictional materials used in brake units should provide the necessary value and stability of the coefficient of friction. The problem is that in heavy braking modes, the coefficient of friction, as well as the material properties, become thermally sensitive. In this case, one way to improve the frictional properties is using the thermal barrier coating (TBC) method.

The physical and mechanical state of the surface layers of rubbing elements is determined not only by the contact temperature, which can be measured experimentally, but by the entire space–time temperature field. Gradients of temperature and the rate of changes in the temperature field have the most value. These factors have unambiguous functional relationships with the kinematic and dynamic parameters of the friction mode, material properties, cooling intensity, and many other parameters. There is a need for a comprehensive study, using all available methods, to investigate the temperature field and the resulting stress state. Reliable results can be obtained only with a reasonable combination of theory and experiment.

Prof. Dr. Aleksander Yevtushenko
Prof. Dr. Michal Kuciej
Guest Editors

Dr. Katarzyna Topczewska
Guest Editor Assistant

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