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FACULTY OF ENGINEERING SCIENCE

Chair of Ceramic Materials Engineering – Prof. Dr.-Ing. Stefan Schafföner

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Equipment

The Chair of Ceramic Materials Engineering is pleased to support you with problems or projects. If you are interested, please contact our secretariat.

Additive Manufacturing

 Fused Filament Fabrication (FFF) / Fused Deposition Modeling (FDM)Hide

Fiber™ (Desktop Metal)

  • Printing Technologies: Micro Automated Fiber Placement (µAFP)
  • Installation space: 310 x 240 x 270 mm³
  • Nozzle temperature: max. 500 °C
  • Print bed temperature: max. 150 °C
  • see news release

INTAMSYS HT Enhanced

  • Installation space: 260 mm x 260 mm x 260mm (W x D x H)
  • Nozzle temperature: 450 °C
  • Installation space temperature: max. 90 °C
  • Print bed temperature: max. 160 °C

Creality3D CS-10-S5

  • Installation space: 500 mm x 500 mm x 500 mm (W x D x H)
  • Nozzle temperature: 240 °C

CooCheer A8

  • adapted for filaments with ceramic filler
  • Installation space: 220 mm x 270 mm x 240 mm (W x D x H)
  • Nozzle temperature: 240 °C

Qidi Tech X-Pro

  • Dual extruder
  • Installation space: 230 mm x 150 mm x 150 mm (W x D x H)
  • Nozzle temperature: 240 °C
​Direct Ink Writing (DIW)Hide

Anycubic Kossel

  • Delta printer for paste printing
  • Installation space: diameter 230 mm, height 300 mm

CERAMBOT

  • Delta printer for paste printing
  • Installation space: diameter 170 mm, height 280 mm
​Stereolithography (SLA)Hide

Anycubic Photon

  • SLA printer for unfilled and filled polymers
  • Installation space: 115 mm x 65 mm x 155 mm (W x D x H)
​Post-TreatmentHide

Anycubic Wash & Cure

  • SLA Post-Treatment

Polymaker Polysher

  • FDM Post-Treatment for PVB Filaments

Coatings  

​ProductionHide
  • Semi-automatic spraying equipment
  • Dipping equipment
  • Spray booth with spray lance for interior coating
​Coating AnalyticsHide
  • Profilometer: Coating thickness measurement and roughness
  • Scratch hardness tester: Lineartester (Erichsen)
  • Contact angle measurement (DSA100, Krüss)

Fiber technology

​Fiber productionHide
  • Laboratory spinning plant
  • Pilot spinning plant
​Fiber coatingHide
  • Continuous, wet-chemical fiber coating plant

Mechanical characterization

​Universal testing machinesHide
  • Universal testing machine Inspekt table blue (Hegewald & Peschke Meß- und Prüftechnik GmbH)

    • load cells: 20 N - 5 kN
    • Room temperature
    • Single fiber tensile test
    • Compression test
    • 3- and 4-point bending
    • Double ring bending test
    • Tensile test of ceramic foils

  • Z050TEW high-temperature universal testing machine (ZwickRoell Testing Systems GmbH)
    • load cells: 20 N - 50 kN
    • Room temperature - 1550 °C (two-zone short furnace up to 1400 °C; three-zone tube furnace up to 1550 °C; air or purge gas)
    • Video extensometer at room temperature
    • Laser extensometer for longitudinal and transverse strain up to 1550 °C (non-contact, mark-free)
    • Single fiber tensile test (RT - 1400 °C)
    • 3- and 4-point bending (RT - 1550 °C)
    • Tensile test (RT - 1400 °C)
    • Compression test (RT - 1550 °C)
    • Double ring bending test (RT - 850 °C)
​Hardness testHide

Microstructure characterization and elemental analysis

​MicroscopyHide
  • Light microscopes
  • Scanning electron microscope incl. EDX and EBSD (Zeiss Sigma 300 VP)
  • Raman microscope (Bruker Senerra II)
​Elemental analysisHide
  • X-ray diffractometer (Bruker D8 Advance with high temperature chamber up to 1200 °C)
  • FT-IR instrument (Bruker Vector 22)
​PreparationHide
  • Cerographic preparation equipment (Struers, hand-held and semi-automatic)
​Variable optical measuring equipmentHide
  • Reflection probe
  • Integrating sphere
  • div. light sources
  • Spectrometer (UV/VIS/NIR, Echelle)

Furnaces

​oxideHide
  • sintering furnaces (Ceram Aix, Nabertherm, oxidizing atmosphere, Tmax=1750 °C)
  • various chamber furnaces
  • High temperature furnaces (up to 1750 °C)
  • calcining furnaces (Fa. Nabertherm, Tmax = 1350 °C, oxidizing atmosphere)
​non-oxideHide
  • Graphitizing furnace (FCT, diameter: 250 mm, height: 300 mm, max. 2400 °C)
  • Heraeus tube furnace (nominal temperature: 1100 °C, approx. 9 kW, 380 V, 24 A, 50/60 Hz, heated length: 1 m, Al2O3 ceramic tube (outer diameter: 90 mm, inner diameter approx. 75 mm), operation under protective gas (nitrogen, argon), heating rate: 5 K/min
  • Pyrolysis furnace (FCT, diameter: 400 mm, height: 600 mm, 1000 °C)
  • Siliconizing furnace (FCT, diameter: 400 mm, height: 500 mm)
  • Protective gas tube furnaces for controlled atmosphere including control system

Precursor ceramic

​SynthesisHide
  • Development laboratory for heteroelement inorganic precursors including high vacuum line
​ProcessingHide
  • Glove boxes (Braun company)

Powdered technology

​Powder characterizationHide
  • Particle sizer (Cilas HR 850; 0.1- 600 µm)
  • Particle sizer (Anton Paar PSA 1190; 0.04 - 2500 µm in suspension; 0.1 - 2500 µm dry)
​Slurry productionHide
  • Freeze drying plant (ALPHA 1-4 LSC, Martin Christ company)
  • Planetary and agitator ball mill
  • Vibrating cup mill (Pulverisette 9, Fritsch company)
  • Ultrasonic disintegrator
  • Fluidized bed reactor (Minibatch, Heinen company)
Slurry characterization Hide
  • Mobility Meter (Zeta potential; Field ESA, Partikel-Analytik Messgeräte GmbH)
  • Rheometer (Anton Paar MCR 702 MultiDrive with furnace up to 600 °C)
​ProductionHide
  • Uniaxial workshop press (ENERPAC, F = 500 kN)

Thermal analysis

​DilatometryHide

Dilatometer (Netzsch, 402E/7, max. 1500 °C)

​Simultaneous Thermogravimetry - Differential Scanning Calorimetry (STA/TG-DSC)Hide
  • TG and DSC/DTA (Netzsch STA 449 F5 Jupiter)
  • DTA/DSC with FT-IR, MS and GC (Netzsch STA 449 F3 Jupiter) including automatic sample changer

Tribology

​TribometerHide
  • Pin-Disc (Waza): Friction coefficient determination, 100 Hz, 1000 N contact pressure
​Brake test standHide
  • In-house design in cooperation with the Chair of Design and CAD
  • Up to 1200 kW, area-specific friction power up to 3200 W/mm2
  • Speed max = 2500 rpm-1
  • Braking force: pneumatic up to 50 kN
  • Brake pressures: depending on specimen size (e.g. for 30 x 30 mm² up to 60 MPa)
  • Flywheel mass: 800 kg (120 kgm²) and 200 kg (15 kgm²) available
  • Tests with constant sliding speed
  • Stop-braking tests, i.e. tests with decreasing speed
  • Pad size: 10 x 20 x 10 mm³ to 30 x 30 x 10 mm³ (L x W x D, other sizes on request)
  • Brake discs: 250 - 1000 mm diameter (other diameters on request)

Composites Manufacturing

​Hot pressHide
  • Fiber composite laboratory with laboratory hot press (heating plate size: 150 x 150 mm², 400 °C)
​Winding technologyHide
  • 4-axis laboratory winding line (XWinder 4X-23)
​Fiber/roving cutting machineHide
  • possible cutting length: 6 mm, 12 mm, 24 mm, 48 mm, 96 mm

Webmaster: Dr.-Ing. Carolin Sitzmann

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