FIELD: metallurgy.
SUBSTANCE: invention refers to electric-chemical treatment of items out of aluminium alloys and can be used in aircraft, space, and automobile industries, and also in construction and architecture, in pneumatic systems of control, in power engineering and other objects of current technology. The procedure consists in treatment of items at direct current in water solution of electrolyte containing g/l: sulphuric acid 7-140, oxalic acid 30-80, tartaric acid 5-20, citric acid 2-15 and boric acid 1-5. Also treatment is carried out at temperature of electrolyte 18-25°C in a stepped way - the first stage is performed at voltage 5-10 V during 0.5-5.0 minutes, the second stage - at voltage 15-28 V to formation of coating of required thickness.
EFFECT: upgraded corrosion resistance, hardness, and rate of film growth; facilitating its dyeing into various colours.
2 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR ELECTROCHEMICAL APPLICATION OF COATING ON ARTICLES FROM ALUMINUM ALLOY | 2023 |
|
RU2821180C1 |
| ELECTROLYTE FOR ANODIZING ALUMINIUM AND ITS ALLAYS | 0 |
|
SU956631A1 |
| METHOD OF THICK-LAYERED ANODIZING OF FLAT ALUMINIUM PRODUCTS | 1994 |
|
RU2062824C1 |
| METHOD OF PRODUCTION OF OXIDE COMPOSITE COAT ON ALUMINIUM AND ITS ALLOYS | 2000 |
|
RU2169800C1 |
| ELECTROLYTE FOR ANODIZING ALUMINUM AND ITS ALLOYS | 2005 |
|
RU2287027C1 |
| ELECTROLYTE FOR COLOR ANODIZING OF ALUMINIUM AND ITS ALLOYS | 0 |
|
SU907090A1 |
| METHOD OF MULTICOLOUR PAINTING OF ARTICLES FROM ALUMINIUM OR ITS ALLOYS | 1990 |
|
RU2061106C1 |
| METHOD OF APPLYING ELECTROCONDUCTIVE PROTECTIVE COATING ON ALUMINIUM ALLOYS | 2023 |
|
RU2817277C1 |
| METHOD OF PRODUCTION OF COLOR IMAGES ON ARTICLES FROM ALUMINUM AND ITS ALLOYS | 2002 |
|
RU2207411C1 |
| METHOD FOR BUILDING-UP BARRIER COATING ON SOLDERED ALUMINIUM ELECTRODES OF OZONE GENERATOR | 2016 |
|
RU2640586C1 |
