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US 8,574,396 B2Granted
Hydration inhibitor coating for adhesive bonds
AssigneeUnited Technologies Corporation
InventorsPromila P. Bhaatia, Joseph Parkos
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Abstract
A method for adhesively bonding a metallic substrate and a component together includes treating the metallic substrate to form an oxide layer thereon, treating the oxide layer with a conversion coating solution to form a bond promoter coating on the oxide layer, and depositing an adhesive material on the bond promoter coating to bond the component and the metallic substrate together.
Claims12
A method for adhesively bonding a metallic substrate and a component together, the method comprising:
- treating the metallic substrate to form an oxide layer thereon;
- treating the oxide layer with a conversion coating solution that includes phosphonic acid and trivalent chromium to form a phosphonate monolayer bond promoter coating on the oxide layer;
- and
- depositing an adhesive material on the phosphonate monolayer bond promoter coating to bond the component and the metallic substrate together.
1 more element
A method for inhibiting hydration of an adhesive joint, the method comprising:
- in an adhesively bonded article having a metallic substrate, an oxide layer on the metallic substrate, and an adhesive material joining a component and the metallic substrate together, resisting hydration of the oxide layer by using a phosphonate monolayer bond promoter coating as a barrier between the oxide layer and the adhesive material.
Dependencies are inferred from the claim text.