Method of making glass-to-metal seal (header)

摘要

A metal-to-glass-to-metal seal that includes a chemical bond between the glass and metal as well as a mechanical seal is obtained by using an oxide layer which joins the glass and metal. A glass tube or glass powder with a coefficient of expansion which approximates the metal's coefficient of expansion is fitted between a pin and sleeve combination. Parts are then heated in a controlled dry hydrogen atmosphere to create a bond between the metal and glass.