How to avoid forge bond

[eveled]

Copper could braze them.
I would worry an oxide layer would interfere with the electrical contact you need
Can you get inconel foil?

Copper melts at 1981 degrees so it won’t braze at that temp.

1981 was the last year for solid copper pennies.

 

[Alex Topfer]

I want to stack some steel and heat it to high temp. Cca 1200°C.

1200c is > 1900f
This is why you should always list units