| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention refers to electrochemistry, and namely to application of strengthening, hard, wear-resistant and protective coatings on steel products and can be used for operation in friction assemblies, for strengthening of surfaces of parts, and in radioelectronic and paint-and-varnish industries. Method involves oxidation using alternating current at temperature of 30 - 40C in electrolyte containing hydroxy tricarballylic acid; at that, electrolyte also includes salts of cobalt, nickel, molybdenum and iron, boric acid, and oxidation is performed using alternating asymmetric current at ratio of cathode and anode current components of 2:1, cathode current density of 0.83 Adm-2, voltage of 15 - 20 V and at ratio of components in electrolyte, gl-1: cobaltic sulphate 100 - 150, cobaltichloride 10 - 16, ferric sulphate 8 - 10, nickel sulphate 15 -20, ammonium polymolybdate 35 - 40, boric acid 20 - 30, hydroxy tricarballylic acid 2.5 - 3. ^ EFFECT: improving wear resistance and corrosion stability of steel surface, reducing power consumption and increasing coating adhesion to the base. ^ 1 tbl, 1 ex |
