Lehrstuhl für Mechanische Verfahrenstechnik (MVT)

Surface Engineering


A components surface determines its properties of interacting with the environment, independently if it is solid (friction on another component), fluid (heat transfer in a heat exchanger) or a mixture of phases (wetting behavior). The properties of the surfaces that give a component a specific function have been studied at the Institute of Particle Process Engineering for more than 10 years. The plastic deformation of a surface due to single cold sprayed particles and high pressure water jets is investigated by numerical and experimental methods. A strong focus of our research lays on the surface characterization. With Scanning Electron Microscopy and Scanning Probe Imaging surface topographies are analyzed precisely. By nanoindentation the mechanical properties of a component close to its surface can be obtained at temperatures up to 800°C. Another focus is on the characterization of the interaction between particles or droplets and surfaces, related to the surface morphology.

 

    Team


    Research Areas


    Research projects


    Completed Research Projects


    Recent Publications


    • P. Breuninger, F. Krull, K. Huttenlochner, C. Müller-Reno, C. Ziegler, R. Merz, M. Kopnarski, S. Antonyuk: Microstructuring of steel surfaces via cold spraying with 316L particles for studying the particle-wall collision behavior, Surface and Coatings Technology (2019), Available online 08.10.2019, doi.org/10.1016/j.surfcoat.2019.125054
    • P. Breuninger, F. Krull, S. Buhl, A. Binder, R. Merz, M. Kopnarski, B. Sachweh, S. Antonyuk: Microstructuring of Titanium Surfaces with Plasma Modified Titanium Particles by Cold Spraying; Particuology 44 (2019), 90-104, doi.org/10.1016/j.partic.2018.08.002
    • F. Krull, R. Hesse, P. Breuninger, S. Antonyuk: Impact behaviour of microparticles with microstructured surfaces: Experimental study and DEM simulation, Chemical Engineering Research and Design 135 ( 2018), 175-184, doi.org/10.1016/j.cherd.2018.05.033
    • P. Breuninger, D. Weis, I. Behrendt, P. Grohn, F. Krull, S. Antonyuk: CFD-DEM simulation of fine particles in a spouted bed apparatus with a Wurster tube, Particuology 42 (2019), 114-125, doi.org/10.1016/j.partic.2018.03.015
    • C. Schlegel, J. Chodorski, M. Huster, N. Davoudi, K. Huttenlochner, M. Bohley, I. Reichenbach, S. Buhl, P. Breuninger, C. Müller-Renno, C. Ziegler, J. Aurich, S. Antonyuk, R. Ulber: Analyzing the Influence of Microstructured Surfaces on the Lactic Acid Production of Lactobacillus delbrueckii lactis in a flow-through cell system, Engineering in Life Sciences 8 (2017), 865-873, doi.org/10.1002/elsc.201700045
    • F. Krull, P. Breuninger, S. Antonyuk. "Dynamic interactions of polystyrene particles with microstructured surface manufactured by cold spray." EPJ Web of Conferences. Vol. 140. EDP Sciences 140 (2017), doi.org/10.1051/epjconf/201714013011 
    • S. Buhl, P. Breuninger, S. Antonyuk: Optimization of a Laval Nozzle for Energy Efficient Cold Spraying of Microparticles, Materials and Manufacturing Processes 33 (2018), 115-122, doi.org/10.1080/10426914.2017.1279322
    • C. Schlegel, J. Chodorski, M. Huster, N. Davoudi, K. Huttenlochner, M. Bohley, I. Reichenbach, S. Buhl, P. Breuninger, C. Müller-Renno, C. Ziegler, J. Aurich, S. Antonyuk, R. Ulber: Analyzing the influence of microstructured surfaces on the lactic acid production of Lactobacillus delbrueckii lactis in a flow-through cell system, Eng. Life Sci. 17 (2017) 865-873.
    • F. Krull, P. Breuninger, S. Antonyuk: Dynamic interactions of polystyrene particles with microstructured surface manufactured by cold spray, Eur. Phys. J. WOC 140 (2017) 13011.
    • K. Schmidt, S. Buhl, N. Davoudi, C. Godard, R. Merz, I. Raid, E. Kerscher, M. Kopnarski, C. Müller-Renno, S. Ripperger, J. Seewig, C. Ziegler, S. Antonyuk: Ti surface modification by cold spraying with TiO2 microparticles, Surf. Coat. Technol. 309 (2017) 749-758.
    • S. Buhl, K. Schmidt, D. Sappok, R. Merz, C. Godard, E. Kerscher, M. Kopnarski, B. Sauer, S. Antonyuk, S. Ripperger: Surface structuring of case hardened chain pins by cold-sprayed microparticles to modify friction and wear properties, Particuology 21 (2015) 32-40.
    • C. Müller-Renno, S. Buhl, N. Davoudi, J. C. Aurich, S. Ripperger, R. Ulber, K. Muffler, Ch. Ziegler: Novel Materials for Biofilm Reactors and their Characterization, Advances in Biochemical Engineering/Biotechnology 146 (2014) 207-233
    • K. Schmidt, S. Buhl, D. Hund, S. Ripperger: Kaltgasspritzen zur Mikrostrukturierung von Bauteiloberflächen, Chem. Ing. Tech. 87 (2015) 111-118.


    Laboratory Equipement


    Cold spray setup

    In house developed setup for processing of various metallic powders in the size range 1 to 30 µm

    SEM

    Phenom 2G pro for analysing the surface morphology of substrates and particles

    Triboindenter

    Hysitron

    Porometer (Model PSM 165, Topas GmbH)

    Measurement of the pore size distribution from porous media

    BET-Analysis (Model Nova 200e, Quantachrome)

    Measurement of the inner surface from porous media

    Ultra-Pycnometer (Model 1000T, Quantachrome)

    Measurement of bulk density

    Contact angle measuring device

    Measurement of wetting properties from surfaces contacted by aerosol droplets

    High speed cameras

    Measurement of particle / droplet trajectories

    Laser diffraction

    HORIBA

    Simulation Tools


    • ANSYS CFX, ANSYS Fluent
    • Simulia ABAQUS
    • EDEM solutions / Liggghts
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