Measurement of thermophysical Material Properties up to 1600 °C
The thermophysical material property thermal conductivity, specific heat capacity, thermal expansion (change in density), phase transformation and decomposition temperature will be measured at temperatures up to 1600°C, but just until the highest melting temperature .
To determine the thermal conuctivity, thin slices of the examined material will be bombarded with a laser pulse. The subsequent increase of temperature at the top is measured in high resolution with an infrared camera. By the one-dimensional heat conduction, the temperature diffusivity can be calculated. The samples can be measured at various temperature levels and gas atmospheres several times.
The specific heat capacity and density are measured temperature-dependent in special devices. (see Thermal Analytical Laboratory).
Selected publications of the research area
- Sandaka, G.; Specht, E.: Influence of material properties on limestone decomposition. Cement Lime Gypsum 3 (2018) 52-56.
- Pliester, S.; Bauer, W.; Al-Karawi, J.; Specht, E.: Ermittlung gesicherter Werte der Wärmeleitfähigkeit feuerfester Werkstoffe für die Auslegung von Industrieöfen und für die Prozessoptimierung. Tagungsband zum 20. Werkstofftechnischen Kolloquium in Chemnitz, 14./15.03.2018, 326-336.
- Sandaka, G.; Al-Karawi, J.; Specht, E.; Silva, M.: Thermophysical properties of lime as a function of origin (Part 4): Conductivity. Cement Lime Gypsum 3 (2017), 36-41.
- Moldenhauer, A.; Bauer, W.; Specht, E.; Herz, F.: Thermophysical properties of lime as a function of origin (Part 3): Emissivity. Cement Lime Gypsum 9 (2016) 58-62.
- Gierl, C.; Danninger, H.; Silva Gonzalez, M.; Schmidt, J.; Specht, E.: Thermophysical properties of sintered steels - effect of porosity and composition. Vortrag: PM2010 Powder Metallurgy World Congress & Exhibition, Florence; 10.10.2010 - 14.10.2010; in: Proceedings PM2010 Volume 5, European Powder Metallurgy Association, Shrewsbury (2010), ISBN: 9781899072149; 41-5
- Danninger, H.; Gierl, C.; Silva Gonzalez, M.; Schmidt, J.; Specht, E.: Thermal expansion and thermal conductivity of sintered steels - the real effect of the porosity. Vortrag: PowderMet 2010, Ft. Lauderdale FL; 27.06.2010 - 30.06.2010; in: Preprints, Metal Powder Industries Federation, Princeton NJ (2010), 11 S. ISBN: 978-0-9819496-4-2
- Silva, M.; Specht, E.; Schmidt, J.: Thermophysical properties of limestone as a function of origin. Part 2: Calcination enthalpy and equilibrium temperature. Cement Lime Gypsum Int. (2010) No 6, 51-57.
- Silva, M.; Specht, E.; Schmidt, J.: Thermophysical properties of limestone as a function of origin. Part 1: specific heat capacities. Cement Lime Gypsum No 2 (2010) 55-62.
- Silva, M.; Specht, E.; Schmidt, J.; Al-Karawi, J.: Influence of the origin of limestone on its decomposition temperature and on the specific heat capacity and conductivity of lime. Hight Temperature-High Pressure 38 (2010), 361-378.
- Silva, M.; Specht, E.; Schmidt, J., Bauer W.: Comparative evaluation of the thermal conductivity for selected materials measured with a laser flash apparatus and other techniques. Proceedings of 30th International Thermal Conductivity Conference and 18th International Thermal Expansion Symposium, August 29- September 2, 2009, Pittsburgh, USA, 480-488. (ISBN 978-1-60595-015-0)
- Silva, M.; Specht, E.; Schmidt, J.: Importance of the origin of limestone on the thermophysical properties influencing the calcination process. Proceedings of 30th International Thermal Conductivity Conference and 18th International Thermal Expansion Symposium, August 29- September 2, 2009, Pittsburgh, USA, 496-505. (ISBN 978-1-60595-015-0)
- Silva, M.; Specht, E.; Schmidt, J.; Al-Karawi, J.: Influence of the sintering compression of metallurgic powder steel on the thermal properties up to 1000 °C. 30th International Thermal Conductivity Conference and 18th International Thermal Expansion Symposium, August 29- September 2, 2009, Pittsburgh, USA.