Fabrication of Glass-to-Metal Seals

In most glass-to-metal seals, the procedure involves:

1.  

       1) Oxides formation on metal surface by heating to the proper temperature

2.        2)  “Wet” the oxides by fused glass to form a glass-oxide-metal transition

3.        3) Seal the metal-glass bond

It is worth to note that a good hermetic seal can be made without the presence of oxide, e.g., as in the case of platinum.

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