Entwicklung und Eichung einer DTA-Apparatur für Temperaturen bis 1500°C

A laboratory-built DTA-apparatus was calibrated by means of enthalpies of fusion (I), lattice transitions (II), endothermic (III) and exothermic reactions (IV). The temperature-dependence of the factor of calibration A is characterized for reactions of types I and II up to 1500°, and for those of types III and IV up to 600°, by an equation of the formA=155.9+ 10^?7·T ³. The error of the enthalpies for reactions of types I, II and IV is 10%. The error can be larger for reactions of type III.