Niobium coatings for joining ceramic to metal
AssigneeMedtronic, Inc.
InventorsNicholas S. Koop, William J. Morrissey
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Abstract
Use of niobium coatings in brazing ceramic and metal bodies particularly for forming hermetic ceramic-metal seals.
Claims13
An article including a ceramic-metal joint, the article comprising a ceramic component and a metal component defining a joint area therebetween, the ceramic component including a coating of niobium thereon in the joint area, and a braze material in the joint area joining the components together by virtue of its being fused to the niobium coating and to the metal component.
The method of joining a ceramic component to a metal component comprising:
- coating the components with niobium in the area to be joined;
- interposing an amount of braze material between the components and establishing contact between the components and the braze material, and
- heating the components and braze material to a brazing temperature.
The method of forming a hermetic seal between a ceramic component and a titanium component, comprising:
- coating the areas on each component which are to be sealed together with niobium;
- placing the coated areas together against an interposed quantity of gold;
- and
- heating the assembly in vacuum to a brazing temperature.
Dependencies are inferred from the claim text.