METHOD OF MODIFICATION OF IRON-CONTAINING SURFACES OF FRICTION UNITS Russian patent published in 2017 - IPC C23C26/00 C23C24/02 B23P6/00 

FIELD: machine engineering.

SUBSTANCE: friction surfaces are fed to the treatment zone of a pre-prepared process medium containing a hydrocarbon carrier and 0.01 to 0.15 wt % of the pre-crushed mixture of minerals shungite, kaolinite, talc, dolomite, carbon black, sulfur of a colloidal and surfactant (surfactant) with the following ratio of them in a mixture, wt %: shungite - 0.5…10, kaolinite - 0.1…30, talc - 0.1…25, dolomite - 2…20, gas black - 1…8, sulfur colloid - 0.1…10, surfactant - 2…5. The dispersion of particles of mineral components and surfactants is 0.1…10.0 mcm. In particular embodiments of the invention, the mentioned mixture of minerals uses an increased content of natural fullerenes in the shungite. In mentioned mixture of minerals, black and gas colloidal grease is used as antifriction components used as solid lubricants to reduce the degree of abrasion of kaolinite, talc and dolomite when modifying the contacting surfaces.

EFFECT: increasing the efficiency and intensity of formation in the near-surface layers of the friction surfaces of a modified protective antifriction layer of increased wear resistance.

3 cl, 1 tbl