FIELD: manufacturing technology.
SUBSTANCE: invention relates to electroplating and can be used in machine building, instrument making, chemical and other industries. Method includes micro-arc oxidation for 70–90 minutes in electrolyte containing aqueous solution of boric acid and sodium hydroxide with concentration of 20–30 g/l and 4–6 g/l respectively, wherein micro-arc oxidation is carried out at density of direct current of 5–10 A/dm2 and electrolyte temperature of 25 or 30 °C.
EFFECT: obtaining high-quality corrosion-resistant coatings based on crystalline aluminum oxide Al2O3 without intermediate stage of formation of amorphous oxide based on Al2O3 with simultaneous reduction of technological danger of process, time and power inputs.
1 cl, 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR MAKING COATINGS ON SURFACES OF INTERNAL CAVITIES OF PRODUCTS FROM ALLOYS OF VALVE GROUP METALS | 2022 |
|
RU2803795C1 |
| METHOD OF PRODUCING COATINGS ON SURFACES OF THROUGH HOLES IN PRODUCTS FROM VALVE METAL ALLOYS | 2017 |
|
RU2669952C1 |
| METHOD OF PRODUCING COATINGS ON SURFACES OF DEEP THROUGH HOLES WITH STRAIGHT AND CURVED AXES IN ARTICLES FROM VALVE METAL ALLOYS | 2018 |
|
RU2694859C1 |
| METHOD OF OBTAINING COATINGS FOR ITEMS MADE OF VALVE METAL ALLOYS | 2017 |
|
RU2676380C1 |
| PROCEDURE FOR APPLICATION OF COATING | 2009 |
|
RU2395632C1 |
| METHOD FOR OBTAINING COATINGS ON SURFACES OF BLIND HOLES OF PARTS FROM ALUMINIUM ALLOYS | 2011 |
|
RU2471895C1 |
| METHOD OF MAKING COATINGS | 2012 |
|
RU2495161C1 |
| PRODUCTION OF COATINGS | 2013 |
|
RU2527107C1 |
| METHOD FOR TREATMENT OF PARTS FROM ALLOYS OF METALS OF VENT GROUP WITH THROUGH-HOLES WITH ELECTROCHEMICAL OXIDATION | 2017 |
|
RU2661135C1 |
| PROCEDURE FOR APPLYING COATING | 2009 |
|
RU2393274C1 |
