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

    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 porosity

    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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