| 摘要 |
FIELD: technological processes. ^ SUBSTANCE: method includes oxidation of products in acid solutions and further heating, at that oxidation is carried out for 30-50 minutes, then products are kept in boiling aqueous solution with content of caustic soda of 0.2-0.4 g/l for 40-50 minutes, afterwards it is heated from 250C to 550C with the rate of 5-10C/min. ^ EFFECT: improved mechanical, electric and chemical properties of coatings. ^ 1 tbl, 1 ex, 1 dwg |
