Section for Mineralogy, Petrology & Geochemistry
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Thermal Analysis

BAEHR pushrod micro-penetration viscometer

The micro-penetration viscometer is used to directly measure viscosities in the range of 107 to 1011 Pa s in a glassy sample. Thereby an Iridium-indenter is penetrated into the sample during an isothermal segment. The viscosity is directly correlated to indentation-depth and can easily be calculated.
Working temperatures:
BÄHR DIL 802V: up to 1650°C
Gas flow: Argon (5.0) at 25 cm3/min
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BÄHR® DIL 802V

Differential Scanning Calorimetry

Differential Scanning calorimetry is a frequently used method in geosciences. Here, we measure the thermodynamic properties of an unknown sample compared to a reference material as a function of temperature. It is thereby possible to study the thermal history of geomaterials, i.e. volcanic glasses.
Working temperatures/pressures:
NETZSCH DSC 404 C Pegasus: up to 1650°C, ambient
PSETARAM Sensys EVO DSC: up to 830°C, 400 bars
Gas flow: Argon (5.0) at 25 cm3/min
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NETZSCH® DSC 404 C Pegasus

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SETARAM® SENSYS EVO DSC

Simultaneous Thermal Analysis (combined Differential Scanning Calorimetry & Thermogravimetry)

The STA is a combination of a DSC and a thermogravimetric instrument. Besides heat capacity measurements one is able to study mass changes of a sample material, as a function of temperature with time, and additionally of pressure and gas composition.
Working temperatures:
NETZSCH® STA 449C Jupiter: up to 1650°C
Gas flow: Argon (5.0) at 25 cm3/min
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NETZSCH® STA 449C Jupiter

Pushrod Dilatometry in horizontal geometry

Volumetric properties are determined on glassy materials using a push-rod dilatometer in horizontal geometry.This includes for example the measurement of thermal expansion of a material applying a controlled temperature program.
Working temperatures:
NETZSCH® DIL 402C: up to 1650°C
Gas flow: Argon (5.0) at 25 cm3/min
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NETZSCH® DIL 402C

 


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