Blackbody Design for High Temperature (1800 to 5500 K) of Metals and Carbon in Liquid States under Fast Heating

Temperature measurements were made with a two-strip wedge-shaped blackbody up to 4100 K (for zirconium) and up to 5600 K (for tungsten). Specific heat capacities were obtained for both metals in the liquid state. We developed a blackbody that would exist not only in solid state but also in the liquid state. This model was constructed specially for investigation of metals, hard steels and liquid carbon. The improved data on thermophysical properties of graphite during melting and of liquid carbon (up to 12000 K) are presented.