Cleaning Copper
Numéro d’image : 13361209
| Cleaning copper. When copper metal is exposed to the air, it tarnishes (corrodes) over time. Tarnish appears as a dull, dense film on the surface. It protects the underlying metal from further corrosion. Tarnish consists of various oxides, sulfides, sulfates, etc. that form due to reactions with gases in the atmosphere. A common way to clean copper (i.e. remove tarnish) is to treat it with an acid for several hours. Shown is a tarnished copper sheet before (left frame) and after (right frame) it has been cleaned with saturated citric acid. | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Turtle Rock Scientific |
| Taille de l’image : | 5600 px × 4476 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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