Актуальные проблемы в машиностроении №2 2015

444 / 460

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:
Koroleva M. S., Student, e-mail:
Krivezhenko D. S., Ph.D. student, e-mail:
Kuzmin R. I., Student, e-mail:
Cherkasova N. Yu., Student, e-mail:
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