"Eisboch" wrote in message
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"CalifBill" wrote in message
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I would guess a spin (friction) weld on the cookware.


I think so ... a "cladding" process.

I know of several specialty products that bond normally incompatible
materials but the process is unique and certainly not welding.

One thing I enjoyed about the technology I was involved in was some of the
weird materials and alloys that could be produced in high vacuum
deposition systems. A process known as "sputtering" involves knocking
off molecules of a source material with energetic ions formed in a plasma
and depositing them onto an object or substrate to be coated.
Using two or more different "sources" at the same time allowed the
co-deposition of completely incompatible materials resulting in a really
strange alloy.

The original "Silverstone" cookware was produced in this manner.

Eisboch


Did not know that about the Silverstone. We used sputtering for coating the
disks in disk drives.