ON A NATURE OF DYNAMIC VISCOSITY IN LIQUID METALS

According to electron theory of metals at melting process character of inter atomic (ion) bond doesn't change, but relative change of special volume makes <= 10%. For alkali metals the final change is especially little similar to 2.5%. Besides, it was experimentally determined, that at the result of melting process only 20-25% of inter atomic bond is broken, that is to say in liquid and crystalline metals coordinative numbers are practically similar. The described structure of liquid metal has dynamic character and this allows accepting liquids as a correlated system, which consist of positive charge ions and free electrons. It is known, that free electrons play significant role in the formation of viscosity of liquid metals. Confirming the potential distribution along with the whole volume in liquid metals according to Thomas-Fermi pseudo potential, it was shown, that viscosity is defined eta = AT(-2) - D law (A and D are value, which don't depend on temperature). On the example of alkali liquid metals satisfactory matching of this phenomenological position was determined at melting temperature till 1500K by corresponding experimental results (with <= 4% error).