In a message dated 03/10/2000 9:39:25 PM Pacific Standard Time, 
fdedip@whale-mail.com writes:
<< No.
 Flip >>
i've seen aluminum grow a white coating over it in patches.  it was some sort 
of oxidization which is what rust is(joining of oxygen to metal i've been 
told).  may have just been the quality of the aluminum.  when i am working 
with aluminum conductors (i'm an industrial electrician) we coat the exposed 
aluminum with a product called noalox.  it stops the production of the 
aforementioned white coating which has a high resistance and can cause 
aluminum electrical connections to catch fire.
hope this helps.
derek
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