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US 8,557,342 B2Granted
Inorganic phosphate corrosion resistant coatings
AssigneeLatitude 18, Inc.
InventorsArun Wagh, Vadym Drozd
Life of this patent
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Abstract
This disclosure relates to phosphate coatings that inhibit corrosion of metals, specifically coatings comprising acidic phosphate and alkaline metal oxide/hydroxide components. In one particular embodiment, phosphate-based coating formulations that reduce or eliminate corrosion of steel and other metals are disclosed. In other embodiments, methods for coating steel surfaces with acidic phosphate and alkaline metal oxide/hydroxide components to reduce or eliminate corrosion of the metal surfaces are disclosed.
Claims3
A method comprising
- contacting a metal surface, at least a portion of the metal surface being corroded, with a composition comprising a mixture of an acidic phosphate component and a basic component of at least one of metal oxide, metal hydroxide, or basic mineral;
- bonding at least a portion of the composition to the corroded metal surface and the metal surface;
- wherein at least a portion of the composition and a portion of the previously corroded surface is removable and/or dislodges from the metal surface
- removing at least a portion of both the corroded metal surface and the composition;
- and
- forming a thin, corrosion protection layer on the surface.
3 more elements
Dependencies are inferred from the claim text.