Газотермічне зміцнення поверхні порошковою композицією на основі білого чавуну

Abstract

The paper investigates stability and wear resistance of the surface layers applied by powdered composition on the basis of white cast iron using gas-thermal spraying and, particularly, stability of cementite in the sprayed surface layer. As a result of exothermal reactions, occurring during the spraying process, optimal bulk structure is obtained, where solid zones, composed from a brittler material, are isolated one from another with a matrix from a viscous material located between them – the so called principle of Charpy-Bochvar holds.