copper oxide
Patina's chemical basis
Copper oxide refers to chemical compounds formed when copper combines with oxygen.
The two main forms are cupric oxide (CuO), a black powder used in ceramics and as a pigment, and cuprous oxide (Cu₂O), a reddish compound used in antifouling paints and as a fungicide.
Copper oxide forms naturally when copper corrodes, producing the greenish patina seen on old pennies or the Statue of Liberty.
The pottery glaze contains copper oxide for its distinctive color.
- verdigrisCopper oxidation's green crust
- powderFine dry particles
- malachiteGreen copper carbonate stone
- patinaSurface film from aging
- mineralNaturally formed crystalline solid
semiconductors · thin film · ore · black · pigments · batteries · tarnish · old penny · red · reddish · solar cells · rust · cuprous · penny · high temperature · chemical reaction · bronze · reduction
- Inorganic Compoundssodium chloride, magnesium chloride, potassium chloride, calcium carbonate, titanium dioxide
- oxidescarbon dioxide, carbon monoxide, nitrogen dioxide, sulfur dioxide, titanium dioxide
- metal compoundstitanium dioxide, calcium chloride, magnesium chloride, calcium carbonate, magnesium hydroxide
- semiconductorssilicon, semiconductor, semiconductors, silicon wafers, transistor
- catalystsenzyme, catalyst, active site, platinum, coenzyme
- ceramic materialsfeldspar, silica, kaolin, china clay, fire clay