What is anodising in the light of Metallurgy?

0 69 Views | Posted 2011-09-14 19:40:18
Asked by Subhadip

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    Suryap2012 | Guide-Level 11

    2011-09-14 21:15:37
    Anodising is the general name applied to methods of treating metals, where the work piece is made the anode in an electrolytic cell, usually to form oxide coatings for the purpose of increasing the performance of the surface.In the case of aluminium, the anodising process forms a layer of aluminium oxide - Al203 - or corundum, which is very hard, relatively inert, electrically insulating and can absorb dyes to colour the film.The anodic film itself grows at the aluminium / aluminium oxide interface by the continuous formation and dissolution of a layer of oxide, this is the so-called barrier layer and its thickness is a function of the proces... view more

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