Simultaneous measurement of force and displacement signal
The force operating on the sample is generated electromagnetically in the TMA 402 Hyperion®. This guarantees a quick response time for experiments with a changing load, e.g. tests on creep behavior. A highly sensitive force sensor (digital resolution < 0.01 mN) continuously measures the force exerted via the push rod and readjusts it automatically. This sets the TMA 402 Hyperion® apart from other instruments, which use only preset values.
- Modular Concept with interchangeable furnaces (compatible with other NETZSCH instruments) for easy and cost-effective expansion and retrofitting
- Gas flows with up to 4 MFCs, controllable via software with programmable atmosphere change for the analysis of e.g. oxidation behavior without manual valve operation
- Digitally programmable force or displacement control up to 4 N (only for F1, 3 N for F3) with linear or stepwise force alteration and continuous force modulation for determining visco-elastic properties like relaxation, creep and stress/strain
- Various accessories for an expanded application range, e.g., for measuring powders, liquids, pastes or metals
Determination of viscoelastic properties like Relaxation, Creep and Stress/Strain
The TMA 402 F3/F1 Hyperion® now offers not only to keep the force constant and to measure the length change, but also to change the displacement and measure the corresponding force. One example where this is used is the stress-relaxation test. This test stretches a sample by a specific amount at a defined temperature. During the test, the deformation is kept constant and the progression of the force is recorded. This force continuously decreases as a result of material relaxation. The stress-relaxation strength is ultimately defined by the residual stress measured after a defined exposure period. The data can be depicted graphically in a stress-time diagram. It is then possible to read off both the stress-relaxation behavior and the values for the relaxation rate and time.
Measurement on sensitive materials but also for higher stresses up to 4N
The electronic control system allows users to set the force value in the mN-range. This enables testing even on sensitive materials such as thin fibers or films. For bigger geometries or higher stresses a force load up to 4 N can be applied using the premium TMA 402 F1 Hyperion® model. The force being exerted upon the sample can be altered via the software in a stepwise or linear fashion. This makes it especially simple to carry out tests such as creep.
Vacuum-tight thermostatic measuring system
The entire TMA 402 F1/F3 Hyperion® measuring system is thermally stabilized via water-cooling. This ensures that the measurement will not be influenced by heat from the furnace or by temperature fluctuations in the local environment. All joints have a vacuum-tight design to allow measurements in a highly pure atmosphere or under vacuum. Pressures of less than 10-4 mbar can be achieved in the TMA 402 F1/F3 Hyperion® with the use of a turbo molecular pump. In combination with the integrated mass flow controllers (MFC) for purge and protective gases (optional in the TMA 402 F3 Hyperion®), measurements in highly pure inert gas or in oxidizing atmospheres can be optimally controlled.
- Max. sample length
- Measuring range
± 2.5 mm
- Dig. resolution (length)
- Force range
0.001 N to ± 4 N in steps of 0.2 mN
(F3 ± 3N)
- Dig. resolution (force)
< 0.01 mN
- Modulated force
Up to 1 Hz (only F1)
- Final vacuum pressure
< 10-4 mbar
- Gas connections
Protective gas, 2 purge gases,
one independent purge gas
- Temperature range
-150°C to 1550°C
The software includes everything necessary for carrying out measurements and evaluating the results. Simple menu navigation and automated routines make the software easy to operate while allowing for complex analyses.
Features specific to TMA:
- Various correction possibilities for taking the expansion behavior of the system itself into account, as well as offset and sample length correction
- Automatic adjustment of sign for force and displacement signal to the measurement configuration being used
- Routines for the determination of characteristic temperatures such as onset, peak and final temperatures
- Evaluation of glass transitions and softening points in accordance with DIN
- Automatic shut-off at softening point
- Expansion coefficients: Calculation and presentation of the technical and physical expansion coefficients
- Automatic sintering step evaluation
- Rate Controlled Sintering (RCS) Software: Sintering with a constant shrinkage rate (optional)
- Measurements with variable force: Determination of visco-elastic properties
- AutoEvaluation automatically and autonomously evaluates thermoanalytical measurement curves without using pre-defined macros.
- c-DTA® function:
Evaluation of the temperature signal for endothermic or exothermic effects
Extensive characterization and optimization of sintering processes
- Density Software:
Determination of changes in volume and density until the liquid state
- Peak Separation:
The separation of overlapping effects
Identification and classification of TMA Curves
The modular design of the TMA 402 Hyperion® makes it unique among the competition
To adjust the instrument for the respective temperature ranges, all that needs to be done is to exchange the furnace. This can be done by the operator. If using the optional double furnace hoist, switching to a second furnace takes only moments.
Sample holder systems tailored to the task
Depending upon the question at hand and the geometry of the sample, the operator has a variety of sample holders to choose from. Holding devices for expansion, penetration, and tension measurements are available, as well as push rods and supports for analyses in 3-point bending. Accessories for the temperature range up to 1000°C are made of fused silica. For the high-temperature range, aluminum oxide varieties are available.
In the TMA 402 Hyperion®, the thermocouple can be changed quickly and easily. Besides type K, a type S variety is also available. The system electronics recognize the installed sensor automatically.
Special sample holders
With the help of special sample containers, the expansion behavior of powders, pastes and liquids can be analyzed, as can metals all the way to the melting point. Accessories for experiments on swelling behavior upon immersion are also available.
Measurements in humid atmospheres
The copper furnace for the TMA 402 Hyperion® instruments can be used as a conventional furnace in the temperature range from -150°C to 500°C. The furnace type was especially conceived for measurements in humid atmospheres and can be coupled to the humidity generator via a special inlet adapter. The humidified gas arrives at the sample from above in this case, and a special gas duct effectively prevents the protective gas from thinning the water concentration unwantedly. The operation in humid atmosphere is possible in the temperature range from 0°C to 100°C.