Method for making a ceramic to metal hermetic seal

Details Method for making a ceramic to metal hermetic seal Method for making a ceramic to metal hermetic seal

1999-11-17

2000-11-14

Ryan, Patrick

Metal fusion bonding

Process

Metal to nonmetal with separate metallic filler

2281246, 257680, B23K 3102, B23K 3300, H01L 2302

Patent

active

061457310

ABSTRACT:
To hermetically seal an optically transparent ceramic or glass member to a metallic housing, an aperture with a diameter less than the diameter of the member is formed through the metallic housing. The member is then press-fit into the aperture, partially displacing metal from the walls of the aperture, forming an inner burr circumscribing the aperture. The walls of the aperture and the circumscribing burr are then coated with a second metal, preferably electroless nickel. The resultant seal maintains hermeticity following thermal cycling and is particularly suited for the manufacture of a hybrid electronic package having an optical or opto-electronic coupling.

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