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Copper is a metal that is found in many different forms. A common form is red copper powder. This is produced through a variety of methods including electrolysis, hydrometallurgy and solid-state reduction. It is commonly used in the production of jewelry. It is also used as an ingredient in the manufacture of some types of plastics. It is also used to create copper metallurgical alloys.
This material is a key ingredient in many glazes and can be used to produce various colors such as oxblood, strawberry, peach bloom, black-red and rose carmin. It is also useful in creating patterns and textures such as flambe, copper vein and rutile. It can be used in saggar firings to produce red-on-white glass.
Pure copper oxidizes to form a film with thickness that increases with time and temperature. The outer layer is cupric oxide, CuO and the inner is cuprous oxide, Cu2O. The thickness of these films varies with temperature and can reach very high values, such as in a copper-tin alloy.
Copper is an essential nutrient for human health and is present in food such as liver, kidneys, nuts, seeds, beans and certain organ meats. It is necessary for the formation of blood cells and to maintain a healthy heart. It is also involved in the regulation of blood pressure, the formation of bones and teeth, and for the normal functioning of the nervous system.
Copper and its compounds are used in a wide range of applications, especially as coatings and inks. They are also used in friction materials and for the production of automobile components via powder metallurgy. They can provide corrosion and wear resistance for these rotating equipment parts by preventing thermal cycling, hot gas corrosion and chemical attack. In addition, they can impart nonsparking and fungicidal properties to oxychloride cements.