I've been reading some interesting things about copper. That green "rust" you see on the copper is actually a good thing.
"Similar to iron and aluminum, the element copper undergoes the process of oxidation, if it is exposed to air. Over here, copper metal reacts with oxygen, resulting in the formation of copper oxide, which appears green in color. It is to be noted that copper does not react with water. The outer green layer, formed after the oxidation of copper, is known as patina.
Unlike other destructive oxidation, patina acts as a protective layer. This is the reason as to why, copper is considered as an important metal, resistant to corrosion. The patina prevents further corrosion of copper beneath the oxidized layer. Very often, patina is seen on the roofs of old buildings, which acts as a waterproofing layer. "
Why Does Copper Oxidize and Turn Green
So it seems the oxide layer keeps corrosion from happening to the copper, could also be acting like a diode too?
"Similar to iron and aluminum, the element copper undergoes the process of oxidation, if it is exposed to air. Over here, copper metal reacts with oxygen, resulting in the formation of copper oxide, which appears green in color. It is to be noted that copper does not react with water. The outer green layer, formed after the oxidation of copper, is known as patina.
Unlike other destructive oxidation, patina acts as a protective layer. This is the reason as to why, copper is considered as an important metal, resistant to corrosion. The patina prevents further corrosion of copper beneath the oxidized layer. Very often, patina is seen on the roofs of old buildings, which acts as a waterproofing layer. "
Why Does Copper Oxidize and Turn Green
So it seems the oxide layer keeps corrosion from happening to the copper, could also be acting like a diode too?
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