Materials and Process Analysis

Grafik der Spannungsverteilung in einer keramische Feder

Methods and technical equipment

Analysis of ceramic raw materials and processes

  • Chemical and phase composition (XRF/XRD)
  • Particle size and shape analysis in the nano- to millimeter range
  • Suspension characterization (rheological properties, surface conductivity, suspension stability)
  • Thermal analysis as well as thermophysical and chemical properties (TG/DTA DSC, dilatometry including gas analytics in a wide variety of atmospheres from -150 °C to 2400 °C)

Structural and microstructural analysis

  • Standard methods of ceramographic preparation
  • Ion beam preparation techniques (BIB/FIB)
  • High-resolution analysis of microstructures and surfaces using FESEM (EDX, WDX, EBSD)
  • TEM cross-sectional analysis including EDX, EELS, EFTEM
  • X-ray computer tomography in the micro- and nano-range, X-ray microscopy
  • Pore distribution (Hg porosimetry, permeation porosimetry, N2/Kr adsorption and N2/Kr desorption, pycnometry)
  • X-ray diffractometry, from room temperature to 1400 °C

Physical properties of materials and components, from room temperature to high temperatures

  • Mechanical strength, fracture toughness, elastic constants and hardness up to 1550 °C
  • Nanohardness, local elastic properties (AFM, AFAM, nano-indenter), adhesion strength
  • Properties of porous and highly porous materials (e.g. membranes, particle filters, catalysts)
  • Thermophysical properties (including heat conductivity, heat capacity, thermal expansion coefficient)
  • Electrical and dielectrical properties (specific resistance from μΩcm to 1015 Ωcm)

Corrosion and tribological properties

  • Corrosion in solutions (T < 250 °C, pressure up to 35 bar) and gases (T < 2000 °C), hot gas testing (burner test stands up to 1500 °C, gas velocity up to 100 m/s)
  • Electrochemical characterization
  • Tribology and wear (oscillating sliding testing at room temperature and higher temperatures, abrasion testing)

Quality and safety testing

  • Climate chambers (-80 °C to 1000 °C), salt spray chamber
  • Unicameral and bicameral temperature shocker
  • Vibration test stand for 600 kg and 200 g
  • Specific contact resistance, surface resistance, dielectric strength, creeping and dielectric properties

Accredited laboratories (DIN EN ISO/EC 17025)

  • Thermoanalysis and thermophysics
  • Particle and suspension characterization
  • Laboratory for quality assurance and reliability

Modeling and simulation

  • Finite element analysis (FEM): ANSYS (Emag/Mech), COMSOL Multiphysics, FlexPDE, Atila
  • Flow velocity simulation: Fluent
  • Systems simulation: Matlab/Simulink, Simulation X, Dymola/ Modelica
  • Thermodynamic simulation: FactSage