Institute for Applied Materials – Materials Science and Engineering

Materials Synthesis

Head

Dr.-Ing. Alexander Kauffmann

Thermogravimetry (TGA)

  • type: Netzsch STA 449 F1 Jupiter
  • range: bis 5000 mg
  • resolution: 0,025 µg
  • temperatures: room temperature to 1550 °C
  • atmospheres: Argon, synthetische Luft
  • can be assisted by mass spectrometer (quadrupole mass spectrometer, Netzsch QMS 403D Aëolos within 1 u and 300 u)

Differential Scanning Calorimetry (DSC)

  • type: Netzsch DSC 404 F1 Pegasus
  • atmosphere: Argon
  • temperatures: room temperature to 1450 °C
  • can be assisted by mass spectrometer

Atom Probe Tomography (APT)

X-Ray Diffraction (XRD)

  • type: Bruker D2 Phaser
  • coupled Θ/2Θ geometry
  • source: Cu or Co
  • line detector LynxEye (possibility of energy discrimination, e.g. fluorescence of Fe and Co using Cu radiation)
  • sample rotation
  • evaluation of the data using: DiffracEVA, ICSD, Vesta, etc.

Zwick Mechanical Testing Machine

  • type: Zwick T100
  • load cell: ± 50 kN
  • maximum load: 25 kN at room temperature, 10 kN at 1300 °C
  • temepratures: room temperature to 1550 °C
  • atmospheres: vacuum, argon
  • modi: compression, tensile, bending
  • compression loading: sample height of maximum 20 mm
  • tensile loading: room temperature to 900 °C with shoulder dimension of 8 or 16 mm, 900 - 1550 °C with shoulder dimension of 16mm
  • bending: four point with 40 mm for room temperature - 1550 °C, four point with 20 mm for room temperature, three point with 40 or 20 mm room temperature - 1550 °C

Hot Pressing (uniaxial)

  • load: 500 kN
  • temperature: < 1000 °C
  • vacuum: 10-3 mbar
  • maximum diameter: 25 mm

Arc-Melting

  • type: AM 0.5 by Edmund Bühler
  • water-cooled copper mold
  • current: up to 800 A
  • vacuum prior to re-melting: < 5 · 10-5 mbar
  • atmosphere: argon
  • capacity: up to ~500 g (depending on the melting point)
  • mold geometry: rods, buttons und blocks

Zone Melting

  • type: Systec
  • possible modes: zone melting, Czochralski process, levitation melting
  • converter power: 50 kW
  • rotation speed: 1 - 70 1/min
  • Abzugsgeschwindigkeit: 0.1 - 100 mm/min
  • atmospheres: argon, nitrogen as well as vacuum (10-7 mbar)
  • dimensions: rods of ᴓ = 8-14 mm, L = 150 … 400 mm

Glovebox

  • atmosphere: argon
  • H2O < 0.1 ppm
  • O2 < 0.1 ppm

Planetary Ball Mill

  • type: Retsch PM 400
  • powder mass: up to 30 g per container
  • container: hardened steel w/ and w/o WC cover
  • balls: hardened steel, WC and Al2O3
  • speed: 250 1/min
  • ratio of 2.5 between base plate and planets
  • unidirectional as well as alternating
  • intermediate cooling with liquid nitrogen possible

Attritor

  • type: Zoz Simoloyer CM01
  • powder mass: 200g
  • container: hardened steel
  • balls: hardened steel, WC
  • speed: 1200 1/min
  • unidirectional as well as alternating
  • cooling down to -20 °C