SMETANA Bedřich VSB - Technical University of Ostrava

Spoluautoři ŽALUDOVÁ Monika , ZLÁ Simona, ROSYPALOVÁ Silvie, KALUP Aleš, DOBROVSKÁ Jana, MICHALEK Karel, STROUHALOVA Michaela

The paper deals with the study of phase transitions temperatures (mainly solidus and liquidus) with use of different thermal analysis methods. The key thermal analysis methods are at the present days DTA (Differential Thermal Analysis), DSC (Differential Scanning Calorimetry) and “direct” thermal analysis. The study presents the basic principles of these methods, characteristics, advantages and disadvantages. There are presented results from the high temperature region (above) 1000 °C with focus on the melting and solidifying region of multicomponent alloys such as steels. The paper discusses obtained results with three mentioned methods at heating/cooling process, with different loads of samples and other factors that can influence the obtained results. The evaluation of heating/cooling curves, DTA (DSC) – curves at heating and cooling is demonstrated. The obtained solidus and liquidus temperatures are compared and discussed.