FIELD: chemistry.
SUBSTANCE: solution contains components in the following ratio, g/l: sodium bichromate 45.0-48.0, sulphuric acid 55.0-60.0, nitric acid 390.0-400.0, compounds containing fluoride ions 55.0-60.0, compounds containing ammonium ions with respect to the pure substance 40.0-50.0, cobalt sulphate 1.0-5.0.
EFFECT: invention provides high adhesion and ornamentality of the coating, moisture resistance, corrosion resistance, high manufacturability, capacity to recreate a passive film in case of mechanical damage to the coating.
| Title | Year | Author | Number |
|---|---|---|---|
| PROCEDURE FOR APPLICATION OF COMPLEX PROTECTIVE COATING ON STEEL PARTS | 2010 |
|
RU2427671C1 |
| METHOD OF PROTECTIVE COATING PRODUCING | 2015 |
|
RU2606364C1 |
| SOLUTION FOR CHROMATIZING ZINC SURFACES | 0 |
|
SU1097713A1 |
| COMPOSITION FOR ZINC SURFACE CHROME-PLATING | 1992 |
|
RU2006520C1 |
| CHEMICAL CONVERSION TREATMENT LIQUID AND CHEMICAL CONVERSION TREATMENT METHOD USING THE LIQUID | 2022 |
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| ANTICORROSIVE COATING APPLICATION METHOD | 2019 |
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RU2718794C1 |
| COMPOSITION FOR CHROME-PLATING ZINC SURFACE | 0 |
|
SU1617054A1 |
| CHROMATIZING BATH | 0 |
|
SU969784A1 |
| SOLUTION FOR BLACK PASSIVATED ZINC | 0 |
|
SU681114A1 |
| SOLUTION FOR CHROME-PLATING OF ALUMINIUM AND ITS ALLOYS | 0 |
|
SU865977A1 |
