Behaviour of the solid alloy particles dispersed in liquid tin under the electric current passage

If an electric current flows along some electroconductive suspension in columnar form the solid particles are experienced thermal, mechanical, and electromagnetic influences. The objects were suspension Sn (liquid) - Ni-Cr-Mo-W alloy (solid particles). This is refractory alloy on the Ni base. The direct constant current (with density similar to 10(6) A/m(2)) flowed through the named suspension during 180 divided by 300 sec. At the beginning of experiments samples were ones containing particles suspended uniformly in volume. Although density of solid particles was similar to 9x10(3) kg/m(3), i. e. higher than density of liquid Sn (similar to 6.8x10(3) kg/m(3)), after end of this processing, the non-uniform distribution of particles in volume of samples was observed: concentration of Ni-alloy particles in lower part was smaller than their concentration in upper part of samples, and simultaneously their concentration is increased near outer surface. There was probably the natural convection of Benard-Rayleigh type which had carried solid particles upwards, and, in same time, there was the action of spatial Lorentz-forces directed to center forcing the radial movement. The knowledge of named phenomena can be useful for elaboration of technology of gradient dispersed materials and development of some materials science fields.