FIELD: decorative coatings.
SUBSTANCE: invention relates to galvanostegy, in particular to deposition of black nickel coatings on metal article surfaces, and can be used in formation of decorative coatings. Solution contains, g/L: nickel sulfate 60-70, ammonium thiocyanate 15-20, zinc chloride 15-20, aluminum chloride 6-10, ammonium fluoride 8-12, sodium silicate 0.5-1.0, surface-active additive (0.05-0.2): quaternary ammonium salt, namely perfluoroenanthic or -pelargonic acid N-hydroxrethyl-N,N-dimethylpropanesmide chloride salt having general formula: 
wherein RF represents C6H13 or C8H17.
EFFECT: increased spreading capability of solution, enabled preparation of dendrite-free nickel coatings with their process and qualitative characteristics improved or preserved.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| SOLUTION FOR BLACK NICKEL PLATING ON METAL SURFACE | 1991 |
|
RU2039129C1 |
| METAL SURFACE TREATMENT COMPOSITION | 2005 |
|
RU2299267C1 |
| ELECTROLYTE FOR APPLYING BLACK NICKEL COATINGS | 0 |
|
SU1544842A1 |
| EXTINGUISHING DEVICE TO COMBAT COMBUSTIBLE LIQUID FIRE | 2003 |
|
RU2262368C1 |
| ELECTROLYTE FOR DIRECT NICKEL-PLATING OF ALUMINIUM AND ITS ALLOYS | 1992 |
|
RU2061104C1 |
| ANTIFRICTION COMPOSITION FOR TREATMENT OF SOLID SURFACES | 1995 |
|
RU2069673C1 |
| METHOD OF CHEMICAL NICKELISING AND SOLUTION FOR ITS REALISATION | 2013 |
|
RU2544319C1 |
| ELECTROLYTE AND METHOD OF DECORATIVE NICKELIZING | 1995 |
|
RU2095491C1 |
| METHOD OF APPLYING ELECTROCONDUCTIVE PROTECTIVE COATING ON ALUMINIUM ALLOYS | 2023 |
|
RU2817277C1 |
| RUST REFORMING AGENT | 2005 |
|
RU2294981C1 |
