Current research projects

Image Verification of storage suitability of cryo tubes
Image Thermostatic Expansion Valves
Image Helium extraction from natural gas
Image Cold meter
Image Software for test rigs
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Calibration leak for the water bath leak test
Image Thermal engines
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Certification of efficient air conditioning and ventilation systems through the new "indoor air quality seal" for non-residential buildings
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
Image Low Temperature Measuring Service
Image Investigation according to DIN EN ISO 14903
Image Investigation of material-dependent parameters
Image Ionocaloric cooling
Image Performance tests of refrigerant compressors

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Low Temperature Tribology

Industry and R&D

Dipl.-Ing. Gunar Schroeder

+49-351-4081-5129

Tribological studies at cryogenic temperatures

For special applications at cryogenic temperatures the use of dry friction is necessary because the working temperatures are significant lower than the working range of liquid lubricants.

The ILK Dresden has extensive experience in the field of material testing at cryogenic temperatures and has developed a measuring system (from roomtemperature down to cryogenic temperatures) to determine the roughness and the coefficient of friction of different sliding material combinations.

The test stand consists of an experimental platform and a traversing mechanism with a force sensor, which is controlled via PC. The direct measurement of the friction force is carried out by the distance covered. Measurements can be performed down to −196 °C (lower temperatures on request). The cooling of the experimental platform and the samples is realised by a controlled liquid nitrogen heat exchanger/evaporator. Measurements are performed under an atmosphere of gaseous nitrogen to prevent the ingress of moisture. Thereby the experimental samples have no direct contact to liquid nitrogen. The uniform temperature distribution is measured by thermocouples, which are calibrated at the ILK Dresden.

Advantages: modular test setup which can be changed to specific requirements; adjustment of sample geometry and/or test track is possible.

Parameter

Measuring accuracyMeasuring range 0.4 N to 2 N≤ 1 % of measured value
Measuring range 2 N to 100 N≤ 0.5 % of measured value
Measuring range extendible up to 5 kN

Repeatability
(e.g. PTFE)

± 0.05 N respectively 1.5 % of coefficient of friction

Your Request

Further Projects - Research and Development

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Characterisation of Superconductors in Hydrogen Atmosphere

Are superconductors really compatible with hydrogen?

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Corrosion inhibitor for ammonia absorption systems

An alternative to chromium(VI) compounds

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Development of a Cryogenic Magnetic Air Separation Unit

Oxygen Enrichment by Applied Cryogenic Magnetohydrodynamics

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Brine (water)-water heat pump

Test according DIN EN 14511 and 14825