Galvanization

The foyer of the Hermitage Theater . Gilding decoration

Galvanization is a method of coating one metal by some other means of electrolysis . Electroplating surfaces for decorative purposes (for example, silver plated). In industry, galvanization is used to strengthen the metal surface of products and protect them from the effects of the external environment, such as corrosion ; usually galvanized with zinc ( galvanized ), copper , chromium , nickel .

Example of electroplating with silver (or gold): A catalyst is added to a container with water to enhance the electrical conductivity of water, a copper frame is dropped (for greater electrical conductivity) with a bag of silver attached to it. Also, the second frame with the attached metal part to be silver plated is lowered. The frame with silver is connected to the DC generator, to the “+” terminal, and the frame with the part to the “-” terminal, the generator is turned on. Silver ions under the influence of current pass into the water and settle on the metal part. After some time, it turns silver plated detail.