Measuring thermal conductivity and heat capacity of molten metallic alloys by electromagnetic levitation in DC field

J. Etay^{1, 2} - A. Diarra^{1, 2} - A. Gagnoud^{1, 2} - Ch. Garnier^{1, 2} - S. Massucci^{1, 2} - M. Al Amir^{3, 4} - A. Sulpice⁵ - S. Rivoirard⁵

¹ Université Grenoble Alpes, SIMAP, F-38000 Grenoble, France
² CNRS, SIMAP, F-38000Grenoble, France
³ Université Grenoble Alpes, GIPSA-LAB, F-38000 Grenoble, France
⁴ CNRS, GIPSA-LAB, F-38000 Grenoble, France
⁵ CNRS, Institut Neel, F-38000Grenoble, France

Abstract
Electromagnetic levitation of electrically conducting droplets by alternating magnetic fields is a technique used to measure the physical properties of liquid metallic alloys, such as heat capacity and thermal diffusivity. In order to reduce electromagnetic stirring and shaping of the molten sample, experiments are conducted in microgravity. On earth, to damp e.m. stirring motion, a transverse uniform continuous magnetic field may be applied. We present calorimetric measurements made in such conditions. Tables 4, Figs 10, Refs 5.