Bonding dissimilar ceramic components
AssigneeThe Boeing Company
InventorsTab Hunter Crooks, MaryAnn S. Muench
Life of this patent
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Abstract
Adhesive compositions and methods for bonding materials with different thermal expansion coefficients is provided. The adhesive is formulated using a flux material, a low flux material, and a filler material, where the filler material comprises particulate from at least one of the two components being bonded together. A thickening agent can also be used as part of the adhesive composition to aid in applying the adhesive and establishing a desired bond thickness. The method of forming a high strength bond using the disclosed adhesive does not require the use of intermediary layer or the use of high cure temperatures that could damage one or both of the components being bonded together.
Claims20
A composite object comprising:
- a first component comprising a ceramic having a first coefficient of thermal expansion and a second component comprising a ceramic having a second coefficient of thermal expansion that is different than the first coefficient of thermal expansion;
- a formed bond adhering the first and second components together, the formed bond resulting from heat treating an adhesive comprising:
- a) a particulate having the same chemical composition as the first component, wherein the particulate is selected from one or more of glass coated ceramic matrix composites and metal matrix ceramics;
- b) a fluxing agent;
- and
- c) a low flux material,
- wherein heating of the adhesive causes a chemical composition change to at least one bonding surface of either the first or second components.
A composite object comprising:
- a first component comprising a ceramic and a second component comprising a ceramic;
- a formed bond adhering the first and second components together, the formed bond resulting from heat treating an adhesive comprising:
- a) a particulate selected from one or more of glass coated ceramic matrix composites and metal matrix ceramics;
- b) a fluxing agent;
- and
- c) a low flux material.
Dependencies are inferred from the claim text.