ResearchPeoplePublications

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.
Garabedian, Nikolay
Postdoctoral Fellow (Alexander von Humboldt)		 Materials Tribology, Linked Data Science, Nanotribology nikolay garabedianXxu7∂kit edu +49 721 204 327-39
Seitz, Michael
 Non-Destructive Testing michael seitzRzk0∂kit edu +49 721 204-32739
Rau, Julia
Ph.D. Candidate		 Elementary Mechanisms of Tribo-oxidation julia lehmannSde8∂kit edu  
  Haug, Christian
Ph.D. Candidate		 Ph.D. Candidate christian haugXzm0∂kit edu +49 721 204 327-41
  Dollmann, Antje
Ph.D. Candidate		 Microstructural Evolution of High-entropy Alloys under Tribological Load antje dollmannFok2∂kit edu +49 721 204 327-38
  Li, Yulong
Ph.D. Candidate		 Abrasive Wear, Laser Surface Texturing yulong liWjy7∂partner kit edu +49 721 204 327-39
Blatter, Ines
M.Sc. Student		   uifjmQmz1∂student kit edu  
Meyer, Franziska
M.Sc. Student		 3D-Dislocation-Configuration under Tribological Load uneiwDnc3∂student kit edu  

Alumni

Name Focus Area
Matz, Patrick,  
Merkle, Lena,  
Bieber, Beatrix,  
Sutschet, Susanne,  
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,  

 

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

 

Available Bachelor's and Master's Theses
Title Title
Data Science Techniques Applied in Materials Tribology Experimental Tribology and Material Science

Publications


Raw data to manuscript by Rau et al.: "Three regimes in the tribo-oxidation of high purity copper at temperatures of up to 150°C".
Rau, J.; Schmidt, O.; Schneider, R.; Greiner, C.
2021, October 18. doi:10.5445/IR/1000138897
Subsurface microstructural evolution during scratch testing on Bcc iron.
Linsler, D.; Ruebeling, F.; Greiner, C.
2021. Metals, 11 (8), 1258. doi:10.3390/met11081258
The Force Cone Method Applied to Explain Hidden Whirls in Tribology.
Mattheck, C.; Greiner, C.; Bethge, K.; Tesari, I.; Weber, K.
2021. Materials, 14 (14), Art.-Nr. 3894. doi:10.3390/ma14143894
Tribological Performance of Additively Manufactured AISI H13 Steel in Different Surface Conditions.
Guenther, E.; Kahlert, M.; Vollmer, M.; Niendorf, T.; Greiner, C.
2021. Materials, 14 (4), 928. doi:10.3390/ma14040928
On the origin of microstructural discontinuities in sliding contacts: A discrete dislocation plasticity analysis.
Xu, Y.; Ruebeling, F.; Balint, D.; Greiner, C.; Dini, D.
2021. International Journal of Plasticity, 138, Article no: 102942. doi:10.1016/j.ijplas.2021.102942
Raw Data to publication on the effect of different surface treatments on tribological properties of additively manufactured samples. "Tribological Performance of Additively- Manufactured AISI H13 Steel in Different Surface Conditions".
Greiner, C.; Günther, E.
2021, February 18. doi:10.5445/IR/1000129689
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, September 22–25, 2020
Characterization of the Microstructure After Composite Peening of Aluminum.
Seitz, M.; Dürrschnabel, M.; Kauffmann, A.; Kurpiers, C.; Greiner, C.; Weidenmann, K. A.
2021. Advanced engineering materials, 23 (2), Art.Nr. 2000575. 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
Tribological performance and microstructural evolution of α-brass alloys as a function of zinc concentration.
Liu, Z.; Messer-Hannemann, P.; Laube, S.; Greiner, C.
2020. Friction. doi:10.1007/s40544-019-0345-8
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, March 23. doi:10.5445/IR/1000117786
Sliding Velocity and Exposure Time Affect Tribologically-Induced Oxidation in Copper.
Lehmann, J.; Greiner, C.; Schneider, R.
2020, January 30. 22nd International Colloquium Tribology (2020), Ostfildern, Germany, January 28–30, 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, France, September 2–4, 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, June 27. Gordon Research Conference on Tribology - Progress in Tribology at the Interface Between Disciplines (GRC 2018), Lewiston, ME, USA, June 24–29, 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, Germany, September 26–28, 2018
Bio-inspired scale-like surface textures and their tribological properties.
Lehmann, J.; Matz, P.; Schäfer, M.; Greiner, C.
2017, May 30. 644. Wilhelm und Else Heraeus Seminar (2017), Bad Honnef, Germany, May 28–31, 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, April 22–26, 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, June 23. Gordon Research Seminar on Tribology - Progress in Tribology at the Interface Between Disciplines (GRS 2018), Lewiston, ME, USA, June 23–24, 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, Germany, March 31–April 5, 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
Laser textured surfaces for mixed lubrication: Influence of aspect ratio, textured area and dimple arrangement.
Schneider, J.; Braun, D. A.; Greiner, C.
2017. Lubricants, 5 (3), Art. Nr.: 32. doi:10.3390/lubricants5030032
Gecko-Inspired Nanomaterials.
Greiner, C.
2007. Bio-mimetic and Bio-inspired Nanomaterials for Life Sciences, Wiley-VCH Verlag. 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