Aluminum and copper reaction

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andy777

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Joined
Aug 17, 2009
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Location
Bakersfield, CA
So I got a gently used new aluminum pot with for use a HLT, I filled it with water and boiled for 20+ minutes to create an oxide layer that we all know about. The oxide layer didn't really form like I've seen in other aluminum. It formed very splotchy, and didn't resemble the nice, even dark layer that I'm used to. Also, after I drained it, there was a wierd powdery substance coating the inside of the kettle, the thermometer probe, the fittings, everything inside the kettle.

My pickup tube, which was installed when I boiled, uses a copper elbow. Did I created a reaction that I don't understand?

I know I could probably listen to the Brew Strong metals show, but if someone has a quickie answer to save me an hour, that would be awesome.

Thanks guys!!!
 
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