Differential thermoanalysis under hydrogen

Differential thermoanalysis under hydrogen (HD-DTA)

Analyte:

  • Metals, metallic systems (e. g. Alloys, rare-earth rich magnetic materials), mineral materials, ceramics, glasses, polymers, composites
  • Sample volume: 1 ml

 

Target size / applications:

  • Measurement of force and mass changes under controlled conditions
  • Determination of transport and state variables (e. g. sorption)
  • Description and classification of phase transitions
  • Identification of transformations
  • Quantitative analysis of transformation enthalpies
  • Simulation of production processes (e. g. drying)

 

Technical equipment:

HP-ST reactor for DTA with magnetic suspension balance (Fa. Rubotherm)
 

  • High pressure cold-wall-reactor made of stainless steel, incl. Al2O3 flow separator, convection reducing and flow guide tubes, measuring and furnace purge gas (Ar)
  • Maximum sample temperature: 1000 °C (maximum sample temperature is 1200°C at lower pressures and not in pure hydrogen atmosphere)
  • Maximum heating rate: ≤ 10 °C/min
  • Maximum pressure: 100 bar (heating and running temperature gradients is also possible at reduced pressures of 200 – 500 mbar)
  • Suitable for operation with hydrogen
  • Magnetic suspension balance:
    • Sample mass: up to 20 g
    • Resolution of weighting: 10 μg