| corrosion |
Damage which occurs on the surface of some coins, generally due to improper storage. Corrosion is caused when a chemical reaction, such as rust, actually eats into the metal.
출처: www.numismedia.com/glossary.htm
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|---|---|
| corrosion |
The dissolution and wearing away of metal caused by a chemical reaction such as between water and the pipes, chemicals touching a metal surface, or contact between two metals.
출처: www.e11th-hour.org/resources/backgrounders/environ...
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| corrosion |
oxidation-reduction reaction where electrons are released at the anode and taken up at the cathode.
출처: matse1.mse.uiuc.edu/~tw/metals/glos.html
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| corrosion |
The natural degradation of steel due to atmospheric conditions or other factors.
출처: www.stainless-steel-world.net/glossary/a_index.asp
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| corrosion |
Generally any change caused on the metal of a coin by chemical attack which may vary from light surface damage to complete destruction of the coin. The toning seen on many coins is a form of corrosion.
출처: www.canadiancoin.com/diction/c.htm
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