METHOD OF FORMING PROTECTIVE COATING SELECTIVELY COMPENSATING WEAR OF FRICTION AND MACHINE PART CONTACT SURFACES Russian patent published in 1999 - IPC

FIELD: protective coatings. SUBSTANCE: repair and restoration composition for surfaces based on iron and iron alloys containing 50-80% ophite, 10-40% nephrite, and 1-10% schungite is prepared by dividing components to 5-10 mcm size particles, mixing, addition to grease, placing resulting composition on friction surface, bedding of composition for 0.5-1.5 , and formation of metal- ceramic protective coating in the course of part operation owing to reactions proceeding in nodes of crystalline lattices where magnesium atoms of composition are replaced by iron atoms. When preparing composition, up to 10% of catalyst can be added. EFFECT: improved metal surface protection. 2 cl, 1 tbl, 3 ex