Surface Engineering
Course Overview
Course scope:
- Tribological contact of two surfaces: contact geometry, line, point and Hertz contact, contact of two curved non-conformal bodies, forces, sliding speeds and stress in the contact, line, point and are loading, Hertz teory, tangential loading, combination of normal and tangential loading – sliding, micro and macro sliding, stick-slip, rolling.
- Elasto-plastic contact, elastic deformation, plastic deformation, plastisity index.
- Contact of rough surfaces, surface roughness and topography. Temperatures in tribological contact: moving and fixed heat source, temperature field, termoelastic contact.
- Surface characterization: microscopy, optical and scannin electron microscopy, atomic force microscopy.
- Surface composition and structure: EDS, X-Ray, IR, XPS, Auger,...
- Profilomety and topography: advanced surface roughness parameters and their analysis, surface load carrying-capacity, surface texturing.
- Surface hardness and elasticity, Young's modulus.
- Residual stress, measuring principles, utilization and residual stress effect.
- Coating adhesion.
- Wear and friction properties of different coating materials, model tribotesters, simulations, real element testing.
- Surface engineering technologies: surface texturing, surface coating technologies, substrate preparation, selection criteria
- Types and properties of surface layers: difusion layer, metalic coatings, cheramic coatings, diamond and dimond like carbon coatings, multicomponent, multilayer and nanostructured coatings.
- Tribological properties of surface engineered surfaces, influence of thickness, hardness, residual stress, roughness and elasticity.
- Contact mechanics of layered surfaces, stress-strain field of coated surfaces and Yield maps for surface engineered contacts.
Literature
[1] F.W. Bach, A. Laarmann, T. Wenz: Modern Surface Technology, Wiley-VCH, 2004
[2] V. Schulze: Modern Mechanical Surface Treatment, Wiley-VCH, 2006
[3] K.L Johnson: Contact Mechanics, Cambridge University Press,1994
[4] G. W. Stachowiak, A.W. Batchelor: Engineering tribology, Elsevier, 1993
[5] B. Bhushan, B. K. Gupta: Handbook of Tribology, McGraw-Hill, 1991
[6] K. Holmberg, A. Matthews: Coatings Tribology: properties, techniques and applications in surface engineering, Elsevier, 1994
[7] D. Dowson, C. M. Taylor, T. H. C. Childs, M. Godet, G. Dalmaz: Thin films in tribology, 1993
[8] K.N. Strafford, P.K. Datta, J.S. Gray: Surface engineering practice, Ellis Horwood, 1990
[9] Grum J.: Laser surface hardening.
[10] Grum J.: Modelling of Laser Surface Hardening,
[11] Grum J.: Failure Analysis of Heat Treated Steel Component ASM Int., Metals Park Ohio, USA, 417 – 502, 2008.
[12] G. Totten: Steel heat treatment: equipment and process design, Taylor & Francis, 2007
[13] C. H. Gür, J. Pan: Handbook of Thermal Process Modeling of Steels, CRC Press, 2009.