Thermogravimetric analyser

Avaliable methods of research

• Thermogravimetric and differential thermal analysis
• Electrode polarization measurements
• Testing of model SOFCs and stacks
• TOF-SIMS analysis
• Total conductivity, Seebeck coefficient and ion transference number measurements in atmospheres
• High-temperature dilatometry
• Processing of ceramic materials, electrode systems and electrochemical cells
• Synthesis of solid oxide materials for high-temperature electrochemical applications
• XPS

High-temperature dilatometry

The technique is based on the measurements of a sample length variations with temperature or isothermal changes of the atmosphere, imploying the Linseis L75 vertical dilatometer. During testing, the sample is placed under a fixed low mechanical stress (50 - 450 mN).

• Materials: ceramics, glass-ceramics and other composites, single crystals, powder green compacts, alloys in form of bars of cylinders. The optimum sample dimensions: 3?3?15 mm. The device is calibrated using Al2O3, quartz or 8YSZ standarts.
• The method makes it possible to determine linear thermal expansion coefficients (TECs), chemical expansion, softening point of glass and glass-ceramic materials, onset and degree of sintering of porous samples, phase transitions of 2nd type etc.
• Temperature range: 20 - 1600 оС.
• Gas atmospheres: air, О2, Ar, 7% Н2 - Ar, СО2, and mixtures of these gases. The measurements can be carried out both in static and flowing gases.
• The gas system is equipped with a programmable gas-box, electrochemical oxygen pump and a sensor enabling to ajust and to continuously control the oxygen partial pressure in the range 10-21 - 1 atm.
• In separate cases, humidity control is also possible.

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