When copper products come into contact with the resulting solution, a light patina of a pleasant gray shade appears on them.įor the artificial aging of brass decor items, the following composition is often used: For example, sometimes the processing of copper products is made by such a composition: But you can get a patina of other interesting colors. A natural green coating on copper, bronze and brass objects is very difficult. In order to obtain a noble film on such things as embossing, sculpture, grating, etc., a wide variety of chemicals can be used. Patination with reagents is often used whenmanufacture of metal decorative products. Grading of forged, chased and cast products by chemical means The product is covered with a protective layer of varnish or oil (for wood). As a result, the patina coating is uneven in tone. In this case, the protruding details of the relief are highlighted, and the depressions remain dark. For the design of small products can be used and other, more expensive dyes. Such compounds are resistant to adverse environmental influences and at the same time are inexpensive. Its surface is ground, and sometimes lightly bleached. The aging of the paint is as follows:Ī product made of metal or wood is thoroughly cleaned and degreased. In many cases, artificial patina covers copper chandeliers, sconces, decorative plates for sockets, etc.įor patination of furniture, panels, metal gratings, etc., this very gentle technique is often used. It happens that in this way, souvenir "old" coins, medals, coats of arms, etc. As in the past, patination can sometimes be seen on cast metal (steel, bronze and cast iron) decor items. Patination can be decorated with metal railing staircases, fences, balconies parapets, etc.Īlso very often this technique is used forartificial aging of copper and brass coins. Very elegant look and finished in this way forged products. Sometimes patination is used for the artificial aging of decor objects in the offices of business people. Today, this technique is also most oftendecorate furniture intended for living quarters. Therefore, approximately the same chemical composition of the film began to be applied to sculptures and other artistic casts. Ancient masters noticed that the coating formed when the fat burns on metal dishes delays its rusting. Then everything was varnished.Īrtificial patination of metalsIt was also developed quite a long time ago. After the alabaster mixture dries, gold foil is glued onto the product. For patination, then used gypsum, which filled the voids on the surface of wooden products. The first manually aged things startedMade in the 14th century in Florence. Since it is very long to wait for a long time to appear on the surface of this or that product, various methods have been developed that allow it to be obtained artificially. The reason for this is usually copper-patina carbonate. The fact that antique things look solid andprestigious, know everything. Later the same word began to be called and the plaque appearing on the tree, the plaster cast, the bluish tinge on the blued steel, and so on. Initially, the concept of "patina" (what is it younow you know) was applied only to the film formed on copper, bronze or brass. In a dry room, the product will be covered later, respectively. If the object is in a humid environment, oxidation, of course, will go faster. Most often, a film of a substance such as copper carbonate on products, depending on the conditions, is formed within 5-25 years. Natural patination usually occurs infor quite a long time. The raid of the first species has greenish shades (malachite), the second - bluish (azurite). It can be, for example, Cu 2(CO 3) (OH) 2 or Cu 3(CO 3) 2 (OH). The copper-formed film is nothing more than ordinary CuCO 3. The answer to the question: "Patina - what is this?" From the chemical point of view is very simple. But sometimes it is brown, dark gray or bluish. Most often formed under the influence of atmospheric factors with natural aging patina has a greenish tinge. The color of such a film can vary widely. Covering these metal objects with a touch and called patina. So, what is a patina? Definition of conceptĪnyone who has ever visited a museum, for suresaw greenish old coins, darkened with time candelabra, sconces, etc. Below in the article, we will try to give the most detailed answer to this question. What is it, certainly would like to know many Internet users. From lovers of antiques, very often you canhear a word like patina.
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