Abstract
In the article the results of exploration of kinetics of mass transfer are introduced at electrospark deposition of tantalum and steel 45 by transition metals of IVB – VIB groups and iron. Is fixed, that the ini- tial velocity of increase in weight of the cathode is approximately identical the same steam of welding rods on used treatment schedules. The kinetic dependencies of variation of weight of welding rods with adequate accuracy are described by polynomial of the second extent. The given way of the specification statement of kinetic dependencies can be useful to systematization of the data of mass transfer on electrospark deposition.