METHOD FOR IMPROVING HIGHLY LOADED FRICTION SURFACES Russian patent published in 2017 - IPC C23C26/00 C10M125/10 

FIELD: chemistry.

SUBSTANCE: method of preparing the composition-modifier to using for the treatment of highly loaded metal friction surfaces of the friction pairs operating at the temperatures up to 250°C, which comprises administering a powder mixture of dispersed particles into a grease oil, stirring it and feeding the powder mixture stirred in the grease oil into the item. Said powder mixture comprises antigorite Mg₆Si₄O₁₀(OH)₈, lizardite Mg₃Si₂O₅(OH)₄ and chrysotile Mg₆Si₄O₁₀(OH)₈, and silicone oil is used as a grease oil, which is first solidified with PTFE micropowder to the desired consistency, and then said mixture is introduced into it. Said mixture contains the following component ratio, wt %: antigorite 2-10, lizardite 2-20, chrysotile 10-30 and polytetrafluoroethylene 25-60. The particles of the PTFE micropowder have the size from 1 to 5 microns. The particles size of antigorite, lizardite and chrysotile ranges from 200 to 400 nm.

EFFECT: duration of scheduled restoration works is increased, the costs of repair work are reduced, and the item work efficiency is increased due to reducing the friction coefficient, active counteraction to surface wear, increasing the critical load and welding load.

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