FIELD: metallurgy.
SUBSTANCE: the invention is pertinent to the field of galvanotechnics, in particular, to anodic oxidation of items from copper and copper alloys. The method includes an anodic oxidation of items in the electrolytic bath containing only alkali (for example, NaOH) with the given concentration in an water solution, at adjustable temperature and the anode current density during time sufficient for formation of a solid layer mainly consisting of the cupric oxide (I) (Cu2O). Technical result is production of a coating layer having the given color, appearance and optical properties and higher adhesion to the copper base and excellent mechanical properties.
EFFECT: production of a coating layer with the given color, appearance, optical properties and higher adhesion to the copper base and excellent mechanical properties.
10 cl, 6 dwg, 8 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MULTICOLOUR PAINTING OF ARTICLES FROM ALUMINIUM OR ITS ALLOYS | 1990 |
|
RU2061106C1 |
| METHOD OF MULTICOLORED DYING OF ALUMINIUM AND ALUMINIUM-ALLOY OBJECTS | 1993 |
|
RU2072000C1 |
| METHOD OF PREPARING OXIDE CATALYSTS | 2003 |
|
RU2241541C1 |
| METHOD OF PASSIVATING WHITE TIN | 2012 |
|
RU2593248C2 |
| METHOD FOR OBTAINING WEAR-RESISTANT COATINGS ON ALUMINUM ALLOYS | 2021 |
|
RU2764535C1 |
| METHOD AND APPARATUS FOR CONTINUOUSLY ETCHING COPPER | 1994 |
|
RU2089666C1 |
| PROCESS OF RECOVERY OF IRON-COPPER-CHLORIDE PICKLING SOLUTION | 1998 |
|
RU2132408C1 |
| COPPER FOIL FOR MANUFACTURING OF PRINTED CIRCUIT BOARDS AND METHOD FOR ITS PRODUCTION | 1995 |
|
RU2138932C1 |
| METHOD FOR PRODUCTION OF COMPOSITE METAL-CERAMIC COATING AT VALVE METALS AND THEIR ALLOYS | 2013 |
|
RU2543659C1 |
| COATING OF FUNCTIONAL ELEMENTS FROM METAL | 2017 |
|
RU2710148C1 |
