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Is anodized aluminum still aluminum

Updated: 8/21/2019
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9y ago

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Yes, but it has a hard transparent (sometimes colored) layer of aluminium oxide grown on it by putting it in an electrolytic cell (as the anode) and passing current through the cell. This layer protects the aluminum metal under it from damage.

Note: if the anodization is red in color the aluminum oxide layer is actually synthetic ruby.

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9y ago
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Q: Is anodized aluminum still aluminum
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