DTAkäyränä
DTAkäyränä, often translated as "DTA curve" or "DTA plot," refers to a graphical representation of data obtained from Differential Thermal Analysis (DTA). Differential Thermal Analysis is a thermoanalytical technique that measures the difference in temperature between a sample and a reference material as a function of temperature or time. This difference arises when the sample undergoes a physical or chemical change, such as melting, crystallization, or a phase transition, which absorbs or releases heat. The DTA curve plots this temperature difference (ΔT) on the vertical axis against the temperature or time on the horizontal axis.
Exothermic processes, where heat is released, are typically depicted as a peak below the baseline of the