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US 2025/0101600 A1Published application
Surface treatment composition and methods for use
AssigneeCorrosion Exchange LLC
InventorLoren L. Hatle
Life of this patent
Estimating the term…
Abstract
Embodiments of the present disclosure provide a surface treatment composition and methods for using same. The composition for removing contaminants from a metallic surface, can include 3 wt % to 40 wt % of at least one bifunctional alkaline compound, 0.03 wt % to 10 wt % of at least one oxidizer comprising a metal salt, and water, where all weight percentages are based on the total weight of the composition.
Claims20
A method of removing contamination from a metallic surface, comprising:
- providing an aqueous solution comprising at least one bifunctional alkaline compound, at least one oxidizer comprising a metal salt and water, wherein the aqueous solution has a pH of about 9 to about 12;
- adding additional water to the solution such that a ratio of the solution to the additional water ranges from about 1:50 to about 1:150 to provide a diluted mixture having a pH of 10.4 to 10.9;
- applying the diluted mixture to a metallic surface to be treated for contamination removal;
- and
- reacting the diluted mixture with the metallic surface to form a passivated metal oxide layer on the reacted metallic surface.
2 more elements
A method of removing contamination from a metallic surface, comprising:
- providing an aqueous solution comprising 3 wt % to 40 wt % of dimethylaminoethanol, 0.03 wt % to 10 wt % of sodium persulfate, and water, wherein the aqueous solution has a pH of about 9 to about 12;
- adding additional water to the solution such that a ratio of the solution to the additional water ranges from about 1:50 to about 1:150 to provide a diluted mixture having a pH of 10.4 to 10.9;
- applying the diluted mixture to the metallic surface using a pressure-driven motive force;
- and
- reacting the diluted mixture with a metallic surface to form a passivated metal oxide layer on the reacted metallic surface.
2 more elements
Dependencies are inferred from the claim text.