In normal atmospheric exposure to carbonic acid (H2CO3) copper and copper alloys form a layer of copper carbonate - a green substance also called patina. This patina (CuCO3) actually serves to protect the copper underneath from further corrosion. The insoluble copper carbonate tightly adheres to the surface preventing further contact with acid rain. However, the patina is a pale and unsightly green that detracts from the appearance of many copper structures and monuments. If you have ever visited Charlottetown, Prince Edward Island you may be familiar with this as the War Memorial in the downtown area is heavily coated in patina.
This reaction begins with the release of gaseous carbon dioxide into the atmosphere from respiration or in the form of emissions from industrial processes. The CO2 dissolves in atmospheric moisture to form carbonic acid:
2006-11-25 05:27:16
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answer #1
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answered by seanbarrable 1
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Some old-style "copper" wire, designed to carry radio frequency signals, is really steel, with a copper-plated coating. The steel core can rust, and the rust can break though the copper coat.
This type of wire, being steel-cored, is both stronger (useful for long wire aerials) and cheaper on materials than solid copper, It can be used for radio frequency applications because very high-frequency alternating currents pass along the surface of conductors rather than through the core- the "skin effect".. So, the current passes through the more conductive copper coating, and the steel within gives the strength.
2006-11-25 07:49:40
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answer #2
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answered by andrew f 4
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No it doesn't, and it also doesn't burn through like alot of wiring. Copper is the suggested and best material that you can use for wiring because it has a very long life, it does not rust and it is not a fire hazard.
2006-11-25 07:01:31
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answer #3
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answered by Imani 5
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it doesn't rust, but copper does corrode. it turns green, and starts to slowly dissolve. how long it takes to deteriorate depends on whether you take care of it, what the weather is like, if the metal is exposed or covered, if it's indoors or outdoors, etc. there's a lot of variables. the statue of liberty is made of copper, it's very green, but obviously not rusted away. throw some more detail into your question, and we can go from there.
2016-03-29 08:37:29
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answer #4
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answered by Anonymous
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Are you kidding me copper does not rust it corrodes it will not rust due to the lack of iron in the copper.
2006-11-25 05:40:12
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answer #5
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answered by sammy 1
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The answer is a simple no,
Copper can turn a sort of bluey green but hardly corrodes
2006-11-25 06:02:03
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answer #6
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answered by jabelite 3
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it still oxidises but its "rust" shows as a green coating.
Unlike iron and steel the green coating protects it from the O2 in the air and prevents further oxidation.
2006-11-25 05:31:25
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answer #7
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answered by Icarus 6
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rust applies strictly to ferrous material, eg containing iron.
Copper will oxidise and will also react to water in a similar but more rapid manner.
2006-11-25 05:24:18
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answer #8
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answered by Silverslim 1
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No - rust comes from iron/steel.
2006-11-25 05:23:24
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answer #9
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answered by Fred Flintstone 3
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No,copper is a non ferrous metal
2006-11-25 07:12:49
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answer #10
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answered by taxed till i die,and then some. 7
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