Actual Problems in Machine Building 2020 Vol. 7 No. 1-2

Actual Problems in Machine Building. Vol. 7. N 1-2. 2020 Materials Science in Machine Building ____________________________________________________________________ 132 STUDY OF BOROCHROME STEEL 20 ARE RECEIVED IN THE CONDITIONS ISOTHERMIC AND THERMOCYCLIC HEATING Alkhimova E.S. , Ph.D. student, e-mail: alximova87@mail.ru Volkov A.S. , Student, e-mail: alex.Volkov170399@mail.ru Maksimov B.A. , Student, e-mail: RafaelmcRay@mail.ru Sizov I.G. , D.Sc. (Engineering), Professor, e-mail: RafaelmcRay@mail.ru Polyansky I.P. , Ph.D. (Engineering), e-mail: RafaelmcRay@mail.ru East Siberia State University of Technology and Management, 40V Klyuchevskaya st., Ulan-Ude, 670013, Russian Federation Abstract The article presented the results of surface saturation steel 20 with boron together with chromium from coatings using isothermal and thermo cyclical heating. Granted comparative analysis of microstructures depending on the treatment method. Investigated micro hardness of borochroming layers, as well as influence of quantity cyclicales heating on the thickness diffusion layer and the content in it chemical elements. Keywords chemical-thermal treatment, borochroming in coating, thermo cyclical, two-component coating, diffusion, micro hardness, micro-X-ray spectral analysis.