Work programme special course
The work program drawn up by Professor Department of Physics, PhD, PhD., head of the research center Microtopography Bauman Belov Valeriy Konstantinovich
Total work content of discipline is 3 units 108 hours:
- classroom work – 60 hours
- independent work – 40 hours
Objectives of development disciplines
The objectives of the development of the discipline “Tribology” is to train professionals able to independently apply and use a variety of modern methods of measurement and evaluation of tribological and topographical characteristics of the engineered surfaces have skills of work with modern equipment for mechanical and tribological properties of the surface layers, using modern equipment to determine the 2D and 3D topography of the characteristics of various engineering surfaces
|1||Mechanical properties of solid surfaces.
Types of communication in the crystal lattice. Elastic and plastic deformation of crystals. Elastic and plastic deformation of solids and their characteristics. Plastic conditions. Brittle strength of solids. Ways of increasing the strength of the surface layers of solids. Devices for determining mechanical properties of solids.
|2||Adhesive properties of solid surfaces.
Surface energy of metals. The dependence of adhesive characteristics on the distance in the gap between the metal surfaces and the properties of the third body in the gap. The change of surface roughness of the coatings depending on the thickness of the coatings. The use of phosphate substrates during the coating process. Devices and methods for determining the adhesion properties of the surface.
|3||Topographic characteristics of the surface of solids.
Standard filters to highlight: nano surface irregularities, surface roughness, surface waviness, the deviations of the surface shape. 2D parameters of surface profiles. 3D settings microtopography surface. The relationship of topographical surface characteristics with the operational characteristics of the surface. Devices and methods for determining the topographical surface characteristics.
|4||Tribological characteristics of two surfaces of solids.
About the third body in the friction zone. Dry, semi-liquid, liquid friction. Types of friction( rest, sliding, rolling). The laws of friction and the limits of their applicability. The dependence of friction on pressure in the friction zone, the topography of the surfaces . of temperature, speed of movement, from physico-chemical processes in the friction zone, from macrogeometry of the contact zone.
|5||Methods of reducing wear. Ways to improve wear.
Stage wear. Engineering practices reduce the wear and use of modern technologies (rolling friction, sliding friction, joints in tension and others). Engineering practices improve the wear and use of modern technologies (coating brushes). The tribological state of the program and the effectiveness of monetary investment in these programs.
Training and methodological support of independent work of students
|Type of self-work|
|1||The definition of the functional and point (digital) assessments roughness profiles on the modern portable equipment. Simulation profiles of different nature (deterministic, random fractal).|
|2||The definition of the functional and point (digital) assessments Microtopography SL and SF surfaces on the optical profilometer Contour GT K1 (firm Bruker, USA) and a contact profilometer MarSurf XR20 with XT20 (Mahr, Germany) konturometrom XT20. Modeling surface roughness and waviness.|
|3||Familiarity with the work of the set of equipment to determine the physical and mechanical properties of materials UMT – 1 Bruker (USA) and other measuring devices|