METHOD OF PRODUCING FUNCTIONAL ANTIFRICTION COATINGS FOR BEARING INTERFACES OF TURBOCOMPRESSORS OF INTERNAL COMBUSTION ENGINES BASED ON METAL-CERAMIC COMPOUNDS WITH LOW FRICTION COEFFICIENT Russian patent published in 2024 - IPC C23C26/00 B23K26/342 

FIELD: various technological processes.

SUBSTANCE: invention relates to a method of forming an antifriction ceramic coating on the surface of a steel article in the form of a rotor shaft of a turbocompressor of an internal combustion engine. Mechanical treatment is carried out, powder suspension is applied, it is levelled with a rolling roller and laser short-pulse deposition of the above suspension is performed. Said powder suspension contains a powder composition containing boron nitride – 40 wt.%, boron carbide – 37 wt.% and lithium oxide – 23 wt.%.

EFFECT: obtaining an antifriction ceramic coating on the surface of said shaft, which increases shaft run-out time, increases intensity of its spinning, reduces the turbo-hole effect and its duration.

3 cl, 1 dwg