IAM - Computational Materials Science
Julia Rau

Julia Rau

Areas of Expertise

Materials tribology

Friction and wear reduction of oscillating saw blades for orthopedical applications with laser surface texturing; perform reproducible tribological experiments in a controlled environment.

Materials characterization techniques

Microstructural and chemical characterization by use of scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS), focused ion beam microscopy (FIB), electron backscatter diffraction (EBSD), X-ray structural analysis (XRD); mechanical testing; thin film characterization techniques (e.g. wafer curvature); electrochemical impedance spectroscopy (EIS).

Education

Karlsruhe Institute of Technology (KIT)

Master of Science,

Material Science and Engineering

2015 - 2017

Karlsruhe Institute of Technology (KIT)

Bachelor of Science,

Material Science and Engineering

2010 - 2014

Awards

Maurice Godet Award, 49th Leeds Lyon Symposium on Tribology, Lyon 2019
Poster Award, MSE 2018, Darmstadt 2018
Hanns-Voith-Stiftungspreis 2018
Hanns-Voith Scholarship 2017
Roland Mack Scholarship 2015 - 2017

Projects

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Tribo-oxides Formation

PhD – Thesis: ‘Mechanisms of tribologically-induced oxidation’

Tribologically-induced oxidation is investigated with a model system consisting of high-purity copper in contact with sapphire spheres in a controlled environment. State-of the art techniques such as scanning and transmission electron microscopy, atom probe tomography and X-ray dispersive spectroscopy are applied to investigate the fundamental mechanisms of tribo-oxidation. Eventually, this knowledge will allow for a strategic design of materials more resistant to tribo-oxidation. In addition, one might in the future be able to strategically make use of or alter such tribologically-induced chemical processes.

Joint project: An ontology for materials science

Development of an example-ontology for materials science within a specific use-case scenario. Project with the Fraunhofer IWM, Freiburg and the Bundesanstalt für Materialforschung und -prüfung (BAM), Berlin.

 

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, September 22–25, 2020
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
Influence of sliding velocity and exposure time on the tribologically-induced oxidation in high purity copper.
Lehmann, J.
2019, October 21. STLE Tribology Frontiers Conference (2019), Chicago, IL, USA, October 20–23, 2019
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
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