Glass manufacturing – Processes – Fusion bonding of glass to a formed part
Patent
1993-02-19
1994-03-15
Jones, W. Gary
Glass manufacturing
Processes
Fusion bonding of glass to a formed part
65 591, 65 5934, 228903, C03C 2704
Patent
active
052942414
ABSTRACT:
A method for making a seal between a sealing glass and titanium by forming a nitride layer on the titanium and then sealing the glass to the nitrided titanium. The formation of the nitride layer can be accomplished by the steps of placing the titanium in a substantially oxygen-free atmosphere comprising a major amount of an inert gas and a minor amount of nitrogen and heating the titanium in that atmosphere to a temperature of at least 300.degree. C. The method allows for the formation of the nitride layer and the glass seal in a single operation. The method works well in the manufacture of feedthroughs with conventional processing equipment.
REFERENCES:
patent: 4236045 (1980-11-01), Van den Plas
patent: 4421947 (1983-12-01), Kyle
patent: 4888037 (1989-12-01), Bandyopadhyay
patent: 5093710 (1992-03-01), Higuchi
patent: 5104755 (1992-04-01), Taylor
patent: 5128080 (1992-09-01), Van Thyne
Douglas Weiss J.
Lessar Joseph F.
Taylor William J.
Wilson Charles N.
Hoffmann John
Jones W. Gary
Latham Daniel W.
Medtronic Inc.
Patton Harold R.
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