Surface Engineering

The student attending this course should: • Get familiar with the characteristics of surfaces exposed to friction and wear, as well as to get familiar with the possible interactions of surfaces with lubricant in the lubrication conditions; • Understand the impact of individual characteristics on the size of the friction and wear at the macro, micro and nano level; • Learn the basic principles of the most common techniques of surface modification and coating deposition processes.

On the basis of mastered knowledge the student is qualified to: • Analyze fundamental aspects of friction and wear; • Analyze the surface texture and roughness parameters, including statistical methods and experimental measurements; • Conducts analysis and synthesis of problems that occur in the mechanics of contact surfaces; • Solves specific tribological problems (primarily to reduce friction and wear) using some of the surface modification methods and/or some of the coating deposition techniques; • Applies methods for the temperature calculation of surfaces in contact and relative movement, including consideration of the running-in process and thermal effects; • Recognize the main parameters that influence the tribological properties of a system at the nano level (nanotribology).

Study of the nature and characteristics of metallic and non-metallic materials surfaces, from the standpoint of values influencing the friction and wear. Analysis of the surface texture and roughness parameters, including statistical methods and experimental measurements. Geometrical and real area of contact. Mechanics of contact area, i.e. the stress distribution under load (Hertz contact). The runn-in process and thermal effects, i.e. calculation of the surface temperature. Mechanical and chemical interaction of surfaces exposed to friction and wear. Antiwear coatings and methods of surface modification. A separate chapter deals with the study of friction, wear and lubrication at the nano scale, i.e. nanotribology.

Preparing of the seminar paper.

No special requirements.

1. A. Rac, Fundamentals of Tribology, Faculty of Mechanical Engineering, Belgrade, 1991, (in Serbian). 2. A. Rac, Lubricants and Machine Lubrications, Faculty of Mechanical Engineering, Belgrade, 2007, (in Serbian). 3. T.R. Thomas, Rough Surfaces, Imperial College Press, London, 1999. 4. F.F. Ling, Surface Mechanics, John Wiley & Sons, New York, 1973. 5. G.E. Totten, H. Liang, Surface Modification and Mechanisms, Marcel Dekker, New York, 2004. 6. K. Holmberg, A. Matthews, Coatings Tribology, Elsevier, Amsterdam, 2009. 7. E. Gnecco, E. Meyer, Fundamentals of Friction and Wear on the Nanoscale, Springer, Berlin, 2007. 8. B. Bhushan (Ed.), Nanotribology and Nanomechanics: An Introduction, Springer, Berlin, 2005.

Total assigned hours: 65

New material: 40
Elaboration and examples (recapitulation): 10

Auditory exercises: 0
Laboratory exercises: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 10
Review and grading of the project: 0
Test: 0
Test: 0
Final exam: 5

Activity during lectures: 0
Test/test: 0
Laboratory practice: 0
Calculation tasks: 0
Seminar paper: 70
Project: 0
Final exam: 30
Requirement for taking the exam (required number of points): 35

N.D. Spencer, Tailoring Surfaces – Modifying Surface Composition and Structure for Applications in Tribology, Biology and Catalysis, World Scientific Publishing, Singapore, 2011.; C.M. Preece (Ed.), Treatise on Materials Science and Technology – Erosion, Vol. 16, Academic Press, New York, 1979.; D. Scott, ed., Treatise on Materials Science and Technology – Wear, Vol. 13, Academic Press, New York, 1979.; C. Mathew Mate, Tribology on the Small Scale, Oxford University Press, New York, 2008.; B. Bhushan (Ed.), Handbook of Micro/Nano Tribology, CRC Press, Boca Raton, 1999.