STA PT 1600 – Determination of the melting behaviour of aluminium oxide (Al2O3) in high temperature applications

Aluminium oxide (Al2O3) is characterised by its high melting temperature of 2070°C, which makes it an ideal material for high-temperature applications up to 2000°C. Among other things, it is used in thermal analyses as a reference for melting behaviour, as in the following measurement of aluminium oxide with an STA PT 1600 (TG combined with simultaneous DSC or DTA).


The figure shows a typical DTA curve of Al2O3, in which a strong endothermic peak marks the melting point. The onset point at 2071.2°C and the offset point at 2090.8°C illustrate the beginning and end of the melting process, while the area under the curve represents the heat of fusion, in this case 1022.4 J/g. This is the amorphous phase of corundum, a very inert and stable material that is of central importance in materials science and analysis.

Related instruments

STA PT 1600

  • (TGA) Thermogravimety and (DSC) Differential Scanning Calorimetry
  • True top loading TG-DSC heat flux sensors
  • Numerous user excheangable TG, TG-DSC and TG-DTA sensors for any kind of application
  • Modular design: sample robot, turntable for up to two furnaces, vacuum tight design, different gas dosing systems, high pressure (up to 5 bar) option, vapor dosing system etc.
  • Temperature range: -150 up to 1600/1750/2000/2400°C