Don't Soak Teflon Aluminum Pans
I posted this infomation on another thread. I started a new thread on this so that readers might find this information based on the subject line.
FYI....If you leave a scratched aluminum Teflon coated pan in soapy water, the Teflon will slowly flake off bit by bit. Soap reacts with aluminum to form atomic hydrogen. Atomic hydrogen is a very small atom that actually moves into the aluminum pan's metallic structure where it eventually meets up with another atom of atomic hydrogen. The resultant molecule that forms when the two atoms meet is what we know as molecular hydrogen (or H2 gas). The hydrogen gas thus formed by the combination of the two atoms greatly increases the size of the molecule such that it can no longer move into the metallic structure. It is the accumulation of this hydrogen gas between the Teflon layer and the aluminum layer that actually lifts the Teflon off of the aluminum pan. This phenomenon is known as "hydrogen blistering". This is a corrosion mechanism that large petroleum refineries must deal with in certain operating equipment.
Bottom line........If you want your Teflon lined aluminum pans to last longer, do not let them soak is soapy water.
The teflon coating will flake off if you do. Iwonder why the pan manufactures don't tell us consumers about this????