Cyanide baths are a proven and commonly used method for electrolytic (galvanic) copper plating. Before the acid bath formula was developed, copper plating of steel was not a popular technique because the obtained layers were poorly adhering and were porous. Applying coatings from alkaline solutions changed this state, and today it is possible to get durable, well-adherent layers.
Copper may be used in the process:
- cyanoalkaline, most often used as one of the multilayer coatings.
- acidic enables the application of high gloss coatings and excellent smoothing properties of the coatings deposited from that place.
Galvanic copper plating is used in the engineering, electrotechnical, electrochemical, electronic and automotive industries and wherever it is necessary to aesthetically and permanently protect steel (or other metals).
The electroplating process can be used to obtain the first protective layer with good adhesion. The coating also has excellent corrosion resistance. Copper is applied for technical purposes as a protective layer against carburisation and nitriding. In addition, the coating obtained as a result of the electrolytic process can be used for decorative purposes – and requires a fitting. As a passive layer, it protects against quick oxidation and ensures an aesthetic appearance for a long time.