Thermal conductivity and diffusivity are the most important thermophysical material parameters for the description of the heat transport properties of a material or component.
Usually, thermal conductivity is determined by Heat Flow Meters (HFM) and Guarded Hot Plate (GHP).
For the precise measurement of thermophysical properties like the thermal diffusivity, the Laser Flash technique (LFA) has proven itself as a fast, versatile and precise absolute method. NETZSCH offers four LFA models, covering the entire spectrum of materials and temperatures.
NETZSCH instruments are based on the respective instrument and application standards for LFA (e.g., ASTM E1461, DIN EN 821, BS EN 1159-2, ASTM C714, etc.).
In order to be deemed suitable, thermoelectric materials should be characterized by high electrical conductivity, a large Seebeck coefficient and low thermal conductivity. The extent to which it will be possible to use thermoelectric generators in the future will depend upon the performance of the materials.
Instruments for the determination of thermal conductivity, thermal diffusivity, cp determination and density are also included in the NETZSCH product range. NETZSCH thus offers a complete solution for determining the ZT value.