Prof. Dr. Christian Greiner

Group Leader

Full Profile

Tel.: +49 721 608-26407
Fax: +49 721 608-24567
Email: greiner∂kit edu

IAM-CMS, KIT
Gebäude 30.48 (MZE)
Strasse am Forum 7
76131 Karlsruhe

Group

Research

The group focuses on materials science aspects of materials under a tribological load.

Our main research topics are:

  • The elementary mechanisms for microstructural and chemical changes
  • The materials science origins of friction and wear
  • Size effects
  • Contact mechanics
  • Bio-inspired materials and structures
  • Laser surface texturing
  • Data Science in tribology

We develop and build our own equipment and instrumentation, e.g. an extremely high resolution in situ reciprocating tribometer

  • Make use of ultra-high resolution electron and ion microscopy, including 3D reconstruction techniques
  • Morphologically texture surfaces by means of laser radiation
  • Employ modern x-ray techniques, including from synchrotron sources
  • International collaboration with scientists

With this unique combination of scientific expertise and analytical tools we aim at strategically tayloring materials and microstructures for lower friction and less wear.

We always have very attractive topics available for bachelor and master theses, so please do contact us in case you are interested in joining the group!

 

 

ACADEMIA

The group offers a wide range of lectures and exercises for students at both the bachelor’s and master’s levels. In the undergraduate program, the focus field “Applied Materials” provides students with competencies in all material classes relevant to engineering sciences as well as in materials mechanics. Students learn how to select suitable materials, process them in a targeted manner, and tailor their properties. In addition, modern simulation, measurement, and characterisation methods as well as specialised manufacturing processes are introduced.

The master’s focus field “Materials and Technologies for Sustainable Energy Systems” offers an in-depth insight into pressing topics such as recycling loops and the challenges of combining resource efficiency with wear resistance. Students become familiar with both modern structural and functional materials as well as scrap- and circularity-compatible alloy design. After completing the program, they are able to describe, evaluate, and further develop the various processes, models, and materials.

Tribometry

Developing multimodal in-situ tribometry: a core activity in the ERC Starting Grant project TriboKey

Tribo-oxidation

Copper oxide formation under tribological loading. (a) TEM lamellae extraction from sliding track (b-d) Cross-sectional HAADF-STEM images (from TEM lamellae) at varius stages of the sliding sequence.

Microscopy

3D-EBSD: crystallographic orientation in 3D, here within a copper wear track.

Group Members
Portrait Name Focus E-Mail Tel.
  Tribological Behavior of Additively Manufactured Microstructures jonas franke does-not-exist.kit edu
     
    bonita beichert does-not-exist.kit edu
  roland kappel does-not-exist.kit edu
  Microstructural Evolution of High-entropy Alloys under Tribological Load antje dollmann does-not-exist.kit edu
  Abrasive Wear, Laser Surface Texturing yulong li does-not-exist.kit edu
9 additional persons visible within KIT only.

Alumni

Name Focus Area
Matz, Patrick,  
Merkle, Lena, B.Sc.  
Bieber, Beatrix,  
Sutschet, Susanne, B.Sc.  
Chen, Xiang, Postdoc  
Becker, Sarah, Ph.D.  
Liu, Zhilong, Ph.D.  
Popp, Uwe,  
Braun, Daniel, Ph.D.  
Messer, Philipp,  
Schneider, Stefan  
Welter, Vasco,  
Schäfer, Michael,  
del Gardo, Thais  
Wettich, Helene,  
Schmidt, Oliver, M.Sc.  
Gorenflo, Max, M.Sc.  
Ruebeling, Frederike, Ph.D.  

 

Name Focus Area
Schweiger, Max,  
Mersch, Simon,  
Laube, Stephan, M.Sc.  
Günther, Elisabeth,  
Heinrich, Julius, M.Sc.  
Kurpiers, Chantal, M.Sc.  
Salgando, Leonardo  
Merz, Tobias  
Wolff, Karsten,  
Lahane, Pratik  
Okle, Philipp  
Otero, Ruben  
Eberle, Valerie  
Roskosch, Thomas  
Aeenehvand, Fatemeh,  
Franziska, Meyer, M.Sc.  
Schreiber, Paul, Postdoc  

 

Publications