Actual Problems in Machine Building 2018 Vol. 5 No. 1-2

Actual Problems in Machine Building. Vol. 5. N 1-2. 2018 Materials Science in Machine Building ____________________________________________________________________ 120 Кукареко, А.В. Белый, М.А. Белоцерковский, Б.Б. Хина // Механика машин, механизмов и материалов. – 2016. ‒ № 2. – С. 75‒80. 12. Особенности формирования модифицированного азотом слоя при ионно-лучевой обработке гиперзвукового газотермического покрытия из аустенитной стали / А.Н. Григорчик, В.А. Кукареко, А.В. Белый, М.А. Белоцерковский // Поверхность. Рентгеновские, синхротронные и нейтронные исследования. – 2016. – № 7. – С. 41–46. STRUCTURAL-PHASE STATE OF THERMAL SPRAYED COATINGS FROM HIGH- CHROMIUM STEELS DEPOSITED USING HIGH-ENTHALPY COMBUSTIBLE GAS Belotserkovskii M.A. 1 , D.Sc. (Engineering), Associate Professor, e-mail: mbelotser@gmail.com Grigorchik A.N. 1 , Ph.D. (Engineering), e-mail: Grigorchik_a_n@mail.ru Kukareko V.A. 1 , D.Sc. (Physics and Mathematics), Professor, e-mail: v_kukareko@mail.ru Konstantinov V.M. 2 D.Sc. (Engineering) , Professor, e-mail: v_m_konst@mail.ru 1 The State Scientific Institution “Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus”, 12 Akademicheskaya str., Minsk, 220072, Republic of Belarus 2 Belorussian national technical university, 65 Nezavisimosty Avenue, Minsk, 220137, Republic of Belarus Abstract Comparative study of the structural-phase state and microhardness of modified nitrogen ions wire steel and thermal sprayed coatings deposited using combustible gas MAF from high-chromium steel 40Cr13, Lastifil 812, 02Cr17Ni11Mo2 was conducted. It is shown that the increased depth of nitride layers in thermal sprayed coatings from high-chromium steel is associated with the acceleration of nitrogen diffusion in coatings of these steel due to a lower content of chromium in them and high defectiveness of crystal of matrix coating phases. Keywords thermal spray coating, ion-plasma nitriding, depth of nitrided layer, structural-phase state, microhardness