BUILDING OF ALLOYED SURFACE LAYER DURING ELECTRIC SPARK TREATMENT OF STEEL 35 BY THE RHENIUM

Abstract

He article presents the influence of the modes of electric spark placement of the alloyed layer on the surface of steel 35 during electric spark alloying using rhenium anode material. The use of this method allowed material scientists to develop a number of new technologies for creating protective alloyed layers of surfaces made of conductive materials with specified functional properties. (Research purpose) The research purpose is studying the effect of electric spark alloying modes during the layering of alloyed layers on steel 35 using rhenium anode material, to study the kinetics of the electro-mass transfer of the anode material to the surface depending on the energy in the pulse and its duration. (Materials and methods) Rhenium Re (99.99 percent) was used as the anode material, the cathode was steel 35. The next equipment was used: BIG-1, Elitron-22-AM with AG-2 unit, IMEIL installation; EVO-50 XVP S. ZEISS SEM, RigakuMiniFlex-II diffractometer (Japan), Cu-Ka radiation, ICDD database; scales VLO-200, VLR-220; micro hardness tester PMT-3M. The samples were cleaned in an ultrasonic bath. (Results and discussion) The data of the total change in the erosion of the anode, the gain of the cathode, the coefficient of electric mass transfer in various modes were obtained. The highest average mass transfer coefficient was observed with electric spark alloying with the highest energy values of 1.8 (62.2 percent) and 0.32 joules (37.4 percent) at the lowest frequencies of 20 and 80 hertz. The ratio of the values of energy and depth of the alloyed layer shows a tendency to decrease the depth with increasing energy and increase with increasing frequency. (Conclusions) The article describes the results of the study of the effect of the modes of electrospray alloying of 35 rhenium steel on the kinetics of mass transfer, elemental, phase composition.