Thermal analysis

The topic area "Thermal Analysis" is occupied with analysis of the modification of physical and/or chemical characteristics of materials, semi-finished products and components, which are attributed to forced temperature-time-changes under defined, but also adjustable atmospheres.
The aim is to characterize, simulate and optimize thermal processes, especially heat treatment processes.

 

Methods

 

• Thermogravimetry [TGA]
• Emission gas thermoanalysis [EGA], gas exchange thermoanalysis with mass spectrometer [MS], FTIR spectrometer, pressure, oxygen and humidity sensors
• Thermomechanic analysis [TMA]/thermodilatometry [TD]/heating microscopy [HM]/optical thermodilatometry
• Differential scanning calorimetry [DSC]/differential thermoanalysis [DTA]
• High-temperature X-ray diffractometry [HT-XRD]
• Thermoelectrical conductometry

 

Effects

 

• Drying, vaporization, sublimation
• Debinding, dewaxing, dehydration, degassing
• Decomposition (pyrolysis, combustion)
• Oxidation, reduction, corrosion, stability under defined terms
• (De)hydration, (de)carburization, (de)nitration
• Melting, consolidation and crystallization processes (temperatures, enthalpies etc.), recrystallization
• Phase transitions, (pseudo-)polymorphism, solution and precipitation processes

 

Services offered

 

• Characterization of the thermal behavior of materials, pre-products and components in a temperature range of -150 to 2400 °C in most different oxidized or reduced inert gas and reactive gas atmospheres after different kinds of preparation (milling, granulation, shaping, stocking etc.)
• Identification of thermodynamical and thermophysical properties and characteristics (conversion, melting, stiffing and crystallization parameters [temperatures, enthalpies, phase diagrams], heat capacities, thermal expansion coefficients, densities, thermal diffusivities, heat conductivities, electric conductivities, wetting parameters etc.) in a temperature range of -150 to 2000 °C
• Kinetic and thermodynamic analysis and modeling of thermal processes of debinding, outgassing and sintering (also on real component geometries), consulting, schooling and seminars about the entire subject

 

Technical equipment of accredited laboratory

 

• Devices and equipment for sample preparation and defined sample storage
• Automated laboratory gas supply system (highly purified inert and reactive gases)
• Simultaneous thermal analyzers STA429/NGB [TGA-DTA-EGA] in connection with mass spectrometers (via capillary, orifice or skimmer), FTIR spectrometers, total pressure sensors, humidity sensors and oxygen sensors (Kanthal, SiC, graphite and tungsten furnaces, temperature range from -80 to 2400 °C, all atmospheres, sample mass up to 10 g, sample diameter up to 17 mm)
• Simultaneous thermal analyzer STA449C/NGB [TGA-DTA/DSC-EGA] in connection with mass spectrometer (via capillary), FTIR spectrometers, total pressure sensors, humidity sensors and oxygen sensors (rhodium furnace, temperature range from 25 to 1650 °C, all atmospheres, including corrosive atmospheres, sample mass up to 5 g, sample diameter up to 15 mm)
• Simultaneous thermal analyzer STA409/NGB [TGA-DTA-EGA] in connection with mass spectrometers (via capillary or skimmer), total pressure sensors, humidity sensors and oxygen sensors (platinum, Kanthal and SiC furnaces, temperature range from 25 to 1550 °C, all atmospheres, sample mass up to 5 g, sample diameter up to 17 mm)
• Macro thermobalance MTG419/NGB [TGA-EGA] in connection with mass spectrometer (via capillary), FTIR spectrometers, total pressure sensors, humidity sensors and oxygen sensors (Kanthal furnace, temperature range from 25 to 1350 °C, all atmospheres, sample mass up to 500 g, sample diameter up to 55 mm)
• Thermomechanical analyzer TMA402 [TMA] (Kanthal furnaces, temperature range from -170 to 900 °C, oxidizing or inert atmospheres, sample length up to 25 mm, sample diameter up to 8 mm)
• Thermodilatometer DIL402/NGB [TDIL-cDTA-EGA] in connection with mass spectrometer (via capillary), FTIR spectrometers, total pressure sensors, humidity sensors and oxygen sensors (SiC furnace, temperature range from 25 to 1550 °C, all atmospheres, sample length up to 25 mm, sample diameter up to 7 mm)
• Thermodilatometer DIL402 E7/ NGB [TDIL-cDTA-EGA] in connection with mass spectrometer (via capillary), FTIR spectrometers, total pressure sensors, humidity sensors and oxygen sensors (SiC and graphite furnace, temperature range from 25 up to 2000 °C, all atmospheres, sample length up to 25 mm, sample diameter up to 6 mm)
• Differential scanning calorimeters DSC 404 NGB [DSC] (platinum furnaces, temperature range from 25 to 1500 °C, oxidizing or inert atmospheres, sample diameter up to 5 mm, sample height smaller than 2 mm)
• Differential scanning calorimeter DSC 404C NGB [DSC] (platinum furnaces, temperature range from 25 to 1500 °C, oxidizing or inert atmospheres, sample diameter up to 5 mm, sample height smaller than 2 mm)

 

Technical equipment of non-accredited test sites

 

• Hot stage microscope [EHM] /LEITZ and LINSEIS (platinum-rhodium furnace, temperature range between 20 and 1750 °C, oxidizing or inert atmospheres and high vacuum, sample diameter up to 5 mm, sample height up to 20 mm)
• In-situ resistance analyzer RIS/ IKTS (SiC furnace, temperature range from 25 to 1000 °C, oxidizing or inert atmospheres)
• In-situ high-temperature X-ray diffraction analyzer (platinum furnace, temperature range between 25 and 1500 °C, oxidizing and inert atmospheres)