Differential Scanning Calorimetry / DSC 404 F1 Pegasus
Heat flux differential scanning calorimetry is a technique which measures the temperature difference between an empty crucible and a crucible containing a sample during heating with a constant rate. Due to the specific heat of the sample, the crucible containing the sample heats up slower than the empty crucible. Furthermore, if the sample undergoes a phase transition a considerable temperature difference is observed due to the absorbed (endothermic process) or released (exothermic process) heat. Hence, a differential scanning calorimeter is perfectly suited for the determination of the specific heat Cp of a sample and for studying phase transitions.
The available DSC 404 F1 Pegasus (NETZSCH-Gerätebau GmbH) is equipped with two exchangeable furnaces which cover the temperature range between -120 °C and 1650 °C. Standard sapphire samples for the determination of Cp using the ratio method are available.
|Temperature range||-120 °C…675 °C (low temperature furnace); 25 °C…1650 °C (high temperature furnace)|
|Sample crucibles||Al (85 ml), Al2O3 (85 ml), PtRh (85 ml), inner diameters: 5.2...6 mm|
|Gas atmospheres||N2, Ar, He|
|Accuracy of Cp||±2.5 % (RT…1400 °C); ±3.5 % (RT…1500 °C)|