METHOD OF MAKING DISPERSION-NANOPARTICLE STRENGTHENED COATINGS Russian patent published in 2009 - IPC C23C28/00 C23C26/00 B82B3/00 B23H9/00 

FIELD: electricity.

SUBSTANCE: method involves primary electric spark machining of the surface of a metal base with a composite electrode. The coating formed undergoes secondary machining with an electrode made from carbon-containing material. Primary and secondary machining is carried out under the following conditions: 0.01≤P_i≤10. 500≤N≤5400000, 0.0185≤f/N≤0.1, where P_i - is energy of a single pulse discharge, J, f - is the frequency of current pulses, Hz, N - the number of current pulses during electric spark machining.

EFFECT: obtaining multifunctional coatings with good operational properties on metal surfaces, working under loading in extreme operating conditions, with increased continuity, wear resistance and heat resistance and less roughness, and less and more stable coefficient of friction.

3 cl, 3 tbl, 1 ex