IAM - Computational Materials Science

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
  • Collaborate with scientists on an international basis

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!

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.
Laser surface texturing, multimodal in-situ tribometry, research data management paul schreiberDea1∂kit edu
Materials Tribology, Linked Data Science, Nanotribology nikolay garabedianCot4∂kit edu
  Crystallography, Tribology at the Grain Boundary christian haugHkd4∂kit edu
Elementary Mechanisms of Tribo-oxidation julia lehmannExf9∂kit edu
  Microstructural Evolution of High-entropy Alloys under Tribological Load antje dollmannReh3∂kit edu
  Abrasive Wear, Laser Surface Texturing yulong liGvo5∂partner kit edu
  uifjmWgi0∂student kit edu  
3D-Dislocation-Configuration under Tribological Load uneiwWcf7∂student kit edu  

Alumni

Name Focus Area
Chen, Xiang, Postdoc Microstructure evolution under tribological load
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  
Schmidt, Oliver,  
Name Focus Area
Heinrich, Julius,  
Salgando, Leonardo  
Merz, Tobias  
Wolff, Karsten,  
Lahane, Pratik  
Okle, Philipp  
Otero, Ruben  
Eberle, Valerie  
Roskosch, Thomas  
Aeenehvand, Fatemeh,  
Wettich, Helene,  
Available Bachelor's and Master's Theses
Title Title
Experimental Tribology and Material Science

Publications


Effect of temperature on the tribo-oxidation of high-purity copper.
Lehmann, J.; Schmidt, O.; Schneider, R.; Greiner, C.
2020, September 24. Materials Science and Engineering Congress (MSE 2020), online, 22.–25. September 2020
Characterization of the Microstructure After Composite Peening of Aluminum.
Seitz, M.; Dürrschnabel, M.; Kauffmann, A.; Kurpiers, C.; Greiner, C.; Weidenmann, K. A.
2020. Advanced engineering materials. doi:10.1002/adem.202000575
Site-Specific Controlled Growth of Coiled Lambda-Shaped Carbon Nanofibers for Potential Application in Catalyst Support and Nanoelectronics.
Lutz, C.; Bog, U.; Thelen, R.; Syurik, J.; Malik, S.; Greiner, C.; Hoelscher, H.; Hirtz, M.
2020. ACS applied nano materials. doi:10.1021/acsanm.0c01374
Microstructural changes in CoCrFeMnNi under mild tribological load.
Dollmann, A.; Kauffmann, A.; Heilmaier, M.; Haug, C.; Greiner, C.
2020. Journal of materials science, 55 (26), 12353–12372. doi:10.1007/s10853-020-04806-0
Raw Data to manuscript on tribologically induced oxidation.
Lehmann, J.; Schneider, R.; Greiner, C.
2020, März 23. doi:10.5445/IR/1000117786
Sliding Velocity and Exposure Time Affect Tribologically-Induced Oxidation in Copper.
Lehmann, J.; Greiner, C.; Schneider, R.
2020, Januar 30. 22nd International Colloquium Tribology (2020), Ostfildern, Deutschland, 28.–30. Januar 2020
Solid solution strengthening and deformation behavior of single-phase Cu-base alloys under tribological load.
Laube, S.; Kauffmann, A.; Ruebeling, F.; Freudenberger, J.; Heilmaier, M.; Greiner, C.
2020. Acta materialia, 185, 300–308. doi:10.1016/j.actamat.2019.12.005
Velocity-dependence of Tribologically-induced Oxidation of High-purity Copper.
Lehmann, J.; Schneider, R.; Greiner, C.
2019, September 4. 46th Leeds-Lyon Symposium on Tribology (2019), Lyon, Frankreich, 2.–4. September 2019
Solids Under Extreme Shear: Friction-Mediated Subsurface Structural Transformations.
Greiner, C.; Gagel, J.; Gumbsch, P.
2019. Advanced materials, 31 (26), Art.Nr.: 1806705. doi:10.1002/adma.201806705
Formation of copper oxide clusters in high-purity copper under a reciprocating tribological load.
Lui, Z.; Lehmann, J.; Patzig, C.; Selle, S.; Höche, T.; Gumbsch, P.; Greiner, C.
2018, Juni 27. Gordon Research Conference on Tribology - Progress in Tribology at the Interface Between Disciplines (GRC 2018), Lewiston, ME, USA, 24.–29. Juni 2018
Copper oxide cluster formation under a reciprocating tribological load in high-purity copper.
Lui, Z.; Lehmann, J.; Patzig, C.; Selle, S.; Höche, T.; Gumbsch, P.; Greiner, C.
2018, September 27. Materials Science and Engineering Congress (MSE 2018), Darmstadt, Deutschland, 26.–28. September 2018
Bio-inspired scale-like surface textures and their tribological properties.
Lehmann, J.; Matz, P.; Schäfer, M.; Greiner, C.
2017, Mai 30. 644. Wilhelm und Else Heraeus Seminar (2017), Bad Honnef, Deutschland, 28.–31. Mai 2017
Influence of Sliding Velocity on the Tribologically-Induced Oxidation in High-Purity Copper.
Lehmann, J.; Liu, Z.; Gumbsch, P.; Greiner, C.
2019, April 25. Spring Meeting and Exhibit (MRS 2019), Phoenix, AZ, USA, 22.–26. April 2019
Formation of copper oxide clusters in high-purity copper under a reciprocating tribological load.
Liu, Z.; Lehmann, J.; Patzig, C.; Selle, S.; Höche, T.; Gumbsch, P.; Greiner, C.
2018, Juni 23. Gordon Research Seminar on Tribology - Progress in Tribology at the Interface Between Disciplines (GRS 2018), Lewiston, ME, USA, 23.–24. Juni 2018
Carbon Nanofibers: Locally Controlled Growth of Individual Lambda-Shaped Carbon Nanofibers.
Lutz, C.; Bog, U.; Loritz, T.; Syurik, J.; Malik, S.; Kumar, C. N. S.; Kübel, C.; Bruns, M.; Greiner, C.; Hirtz, M.; Hölscher, H.
2019. Small, 15 (7), 1970036. doi:10.1002/smll.201970036
Nano-scale surface steps as the origin of friction anisotropy of snake scales.
Wu, W.; Yu, S.; Greiner, C.; Gomard, G.; Hölscher, H.
2019. DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM), Fachverband Oberflächenphysik (2019), Regensburg, Deutschland, 31. März–5. April 2019
Glassomer-Processing Fused Silica Glass Like a Polymer.
Kotz, F.; Schneider, N.; Striegel, A.; Wolfschläger, A.; Keller, N.; Worgull, M.; Bauer, W.; Schild, D.; Milich, M.; Greiner, C.; Helmer, D.; Rapp, B. E.
2018. Advanced materials, 30 (22), 1707100. doi:10.1002/adma.201707100
Locally Controlled Growth of Individual Lambda-Shaped Carbon Nanofibers.
Lutz, C.; Bog, U.; Loritz, T.; Syurik, J.; Malik, S.; Kumar, C. N. S.; Kübel, C.; Bruns, M.; Greiner, C.; Hirtz, M.; Hölscher, H.
2019. Small, Article no 1803944. doi:10.1002/smll.201803944
Friction reduction through biologically inspired scale-like laser surface textures.
Schneider, J.; Djamiykov, V.; Greiner, C.
2018. Beilstein journal of nanotechnology, 9, 2561–2572. doi:10.3762/bjnano.9.238
Characterization of the microscopic tribological properties of sandfish (Scincus scincus) scales by atomic force microscopy.
Wu, W.; Lutz, C.; Mersch, S.; Thelen, R.; Greiner, C.; Gomard, G.; Hölscher, H.
2018. Beilstein journal of nanotechnology, 9, 2618–2627. doi:10.3762/bjnano.9.243
Microstructure evolution and deformation mechanisms during high rate and cryogenic sliding of copper.
Chen, X.; Schneider, R.; Gumbsch, P.; Greiner, C.
2018. Acta materialia, 161, 138–149. doi:10.1016/j.actamat.2018.09.016
Nanocomposites: Glassomer-Processing Fused Silica Glass Like a Polymer (Adv. Mater. 22/2018).
Kotz, F.; Schneider, N.; Striegel, A.; Wolfschläger, A.; Keller, N.; Worgull, M.; Bauer, W.; Schild, D.; Milich, M.; Greiner, C.; Helmer, D.; Rapp, B. E.
2018. Advanced materials, 30 (22), 1870151. doi:10.1002/adma.201870151
Stages in the tribologically-induced oxidation of high-purity copper.
Liu, Z.; Patzig, C.; Selle, S.; Höche, T.; Gumbsch, P.; Greiner, C.
2018. Scripta materialia, 153, 114–117. doi:10.1016/j.scriptamat.2018.05.008
The origin of surface microstructure evolution in sliding friction.
Greiner, C.; Liu, Z.; Schneider, R.; Pastewka, L.; Gumbsch, P.
2018. Scripta materialia, 153, 63–67. doi:10.1016/j.scriptamat.2018.04.048
Transparent, abrasion-insensitive superhydrophobic coatings for real-world applications.
Helmer, D.; Keller, N.; Kotz, F.; Stolz, F.; Greiner, C.; Nargang, T. M.; Sachsenheimer, K.; Rapp, B. E.
2017. Scientific reports, 7 (1), Art.Nr. 15078. doi:10.1038/s41598-017-15287-8
Gecko-Inspired Nanomaterials.
Greiner, C.
2007. Bio-mimetic and Bio-inspired Nanomaterials for Life Sciences, Wiley-VCH, Weinheim. doi:10.1002/9783527610419.ntls0203
Sequence of Stages in the Microstructure Evolution in Copper under Mild Reciprocating Tribological Loading.
Greiner, C.; Liu, Z.; Strassberger, L.; Gumbsch, P.
2016. ACS applied materials & interfaces, 8 (24), 15809–15819. doi:10.1021/acsami.6b04035
Haften wie ein Gecko.
Greiner, C.; Hölscher, H.
2016. Physik in unserer Zeit, 47 (3), 116–122. doi:10.1002/piuz.201601422
Bio-inspired scale-like surface textures and their tribological properties.
Schaefer, M.; Greiner, C.
2015. Bioinspiration & biomimetics, 10 (4), Art.Nr.:044001. doi:10.1088/1748-3190/10/4/044001
Chronology of the microstructure evolution for pearlitic steel under unidirectional tribological loading.
Wolff, K.; Liu, Z.; Braun, D.; Schneider, J.; Greiner, C.
2016. Tribology international, 102, 540–545. doi:10.1016/j.triboint.2016.06.016
Liquid Glass: A Facile Soft Replication Method for Structuring Glass.
Kotz, F.; Plewa, K.; Bauer, W.; Schneider, N.; Keller, N.; Nargang, T.; Helmer, D.; Sachsenheimer, K.; Schäfer, M.; Worgull, M.; Greiner, C.; Richter, C.; Rapp, B.
2016. Advanced materials, 28 (23), 4646–4650. doi:10.1002/adma.201506089
Optimum dimple diameter for friction reduction with laser surface texturing: the effect of velocity gradient.
Greiner, C.; Merz, T.; Braun, D.; Codrignani, A.; Magagnato, F.
2015. Surface topography, 3 (4). doi:10.1088/2051-672X/3/4/044001
Contact Splitting and the Effect of Dimple Depth on Static Friction of Textured Surfaces.
Greiner, C.; Schäfer, M.; Popp, U.; Gumbsch, P.
2014. ACS Applied Materials & Interfaces, 6 (11), 7986–7990. doi:10.1021/am500879m