Anodized planes ?

Date:         16 Aug 99 22:28:04 
From:         JF Mezei <>
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Bicycles and airplanes use a lot of similar technologies. Both need to
be strong and light.

One example is bicycle wheel rims. Most are high tech aluminium (and
some now carbon-fibre).

For rims and other parts, anodisation is often used. It not only
provides a very long lasting and clean finish, but, i am told, also
strengthens the aluminium. (is that true ?).

Has this ever been considered for an aircraft ? I realise that the
anodisation process would have to be done during the construction, but
the finish would be very hot, long lasting, and very light (no paint

Would the change in characteristics of the aluminium sheets from the
anodisation process improve the aircraft or make the aluminium less
flexible and more likely to crack after many cycles ?