Actual Problems in Machine Building 2015 No. 2

Actual Problems in Machine Building. 2015. N 2 Materials Science in Machine Building ____________________________________________________________________ 444 TRIBOTECHNICAL PROPERTIES OF SURFACE LAYERS HARDENED BY TITANIUM AND VANADIUM CARBIDES IN ELECTRON-BEAM TREATMENT IN THE AIR ATMOSPHERE Mul D. O. , Ph.D. student, e-mail: ddariol@yandex.ru Koroleva M. S. , Student, e-mail: margoshka9428@mail.ru Krivezhenko D. S. , Ph.D. student, e-mail: dinylkaa@yandex.ru Kuzmin R. I. , Student, e-mail: kuzia2-62@yandex.ru Cherkasova N. Yu. , Student, e-mail: ninacherkasova60@gmail.com Novosibirsk State Technical University, 20 Prospect K. Marksa, Novosibirsk, 630073, Russian Federation Abstract Surface layers alloyed with titanium, vanadium and carbon in different combinations during electron-beam cladding in the air atmosphere were investigated by scanning electron microscopy. The results of tribotechnical testing showed that increasing the vanadium content simultaneously with decreasing the titanium content in the cladded layers led to enhancing wear resistance under friction against fixed and loosely fixed abrasive particles. Coatings with the same content of titanium and vanadium had the highest microhardness values. Keywords high-energy electron beam, cladding, steel, vanadium carbides, titanium carbides, wear resistance