Sensitive materials are materials that can sense small changes in physical, chemical or biological quantities (e.g., electricity, light, sound, force, heat, magnetism and gas distribution, etc.) and can exhibit significant characteristic changes depending on the amount of change.
The metal alloy γ-TiAl has excellent properties such as corrosion resistance, high temperature resistance and low specific gravity, but it is very sensitive to oxygen, so a very pure inert atmosphere is required for DSC testing. In addition, a suitable crucible is needed to obtain reliable results.
Metal crucibles have good thermal conductivity and low time constants, but can react or stick to alloys at high temperatures and are not suitable for testing metal samples. To combine the advantages of Pt crucibles and to avoid sample reaction with Pt crucibles, NETZSCH has introduced a specially fabricated Pt+Al2O3 lined crucible to facilitate DSC testing of metals and their alloys.
In addition, it can be equipped with an oxygen removal accessory (OTS system) to remove residual traces of oxygen from the instrument. With the OTS accessory, the residual oxygen concentration in the instrument is less than 1 ppm, resulting in better test results.
The DSC 404 F3 Pegasus and STA 449 F3 Jupiter have a vacuum-tight design and can be equipped with a variety of different sensors and crucibles for all complex DSC and TG tests (including oxygen-sensitive materials).
Please contact us if you need a crucible for this test.