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US 11,624,121 B2Granted
Solution composition and method for single-bath post treatment of substrate
AssigneeRaytheon Technologies Corporation
InventorsWeilong Zhang, Michael A. Kryzman
Life of this patent
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Abstract
Disclosed is a solution composition which may be used for a single-bath electrochemical passivation and a method using the same. The solution composition includes a metal cation, a metal-oxide anion; and an organic ligand, and optionally includes a non-metallic oxide anion or a polymer. The solution composition may prevent undesired precipitation of metal oxides before performing passivation. In addition, the method of passivation using the solution composition in a single-bath use is also provided.
Claims12
An article manufactured by a method of single-bath passivation post-treatment, comprising:
- preparing a solution composition;
- applying the solution composition to a substrate;
- applying an electric current to the substrate to perform an electrode deposition;
- wherein the solution composition comprises:
- a metal cation selected from the group consisting of Ce3+, Y3+, La3+, Pr3+, Sm3+, and mixtures thereof;
- a metal-oxide anion selected from the group consisting of VO3−, MoO42−, WO42−, and mixtures thereof;
- an organic ligand selected from the group consisting of acetic acid, lactic acid, citric acid, oxalic acid, salicylic acid, tartaric acid, ethylenediaminetetraacetic acid (EDTA), and mixtures thereof;
- a non-metallic oxide anion selected from the group consisting of PO43−, SiO3−, B2O42−, and mixtures thereof;
- and
- a polymer selected from the group consisting of polyacrylic acid, polyol, polyethylene glycol, and mixtures thereof;
- wherein the substrate comprises a first metallic-oxide film formed from the metal cation, and a second metallic-oxide film formed from the metal-oxide anion or a non-metallic-oxide film formed from the non-metallic oxide anion.
8 more elements
Dependencies are inferred from the claim text.