Technologies of Surface Engineering

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Kirsten Bobzin

Head of Institute


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Lecture and Exam information


The lecture deals with the technical meaning of surfaces for the function of components in mechanical engineering. It will discuss the definition of the term surface and its characteristics and examinehe importance of the technical surface as an economically determining factor. Students learn to attach an adequate amount of importance to the respective application for future engineering functions of the technical surface, as is already the case for the volume function of a material. The lecture furthermore aims at explaining technologies that influence surface properties. In addition to thermal spraying processes, physical vapor deposition (PVD) and chemical vapor deposition (CVD) processes as well as deposition brazing and deposition welding, the class will also cover further surface technology processes. Starting from general and current application areas, material solutions and process solutions for the production of effective surface properties are presented and discussed. The focus is on wear and corrosion protection as well as protection against high temperature corrosion and oxidation, and protection against thermal stress. A further chapter will present the use of modeling and simulation in surface technology. During the exercises, students can deepen their knowledge regarding different surface technologies.

Summary of the contents of Technologies of Surface Engineering



1. Introduction to surface technology

  • Surfaces as phase boundaries to the environment
  • Wetting of surfaces by liquids
  • Adhesion mechanisms between coating and base material
  • Function of surfaces

2. Electrochemical metal deposition

  • Galvanics
  • Chemical metal deposition

3. Conversion process

  • Anodizing
  • Phosphating
  • Chromating
  • Burnishing

4. Thermochemical diffusion process

  • Carburization hardening
  • Nitriding
  • Borating
  • Chromating
  • Alitizing
  • Siliconizing

5. Technical plasmas

  • Thermal and non-thermal plasmas

6. Physical Vapor Deposition (PVD)

  • Magnetron Sputtering
  • Arc-PVD
  • Low voltage arc discharge
  • Electron Beam PVD

7. Chemical Vapor Deposition (CVD)

  • High-temperature CVD
  • Plasma CVD
  • Hot filament CVD

8. Sol-gel procedure + Hot dipping process

  • Sol-gel process
  • Hot-dip process

9. Thermal spraying

  • Flame spraying
  • High velocity flame spraying
  • Cold spraying
  • Arc spraying
  • Plasma spraying

10. Brazing deposition + Welding deposition

  • Brazing deposition
  • Welding deposition

11. Material surfaces

  • Ecological, economical, technical potentials of surface technology
  • Thermal, chemical, mechanical loads on surfaces
  • Pretreatment
  • Surface modification
  • Coating
  • Post-treatment
  • Requirements for layer, bond, system

12. Modeling and simulation in surface technology

  • Process simulation
  • Material simulation