The present disclosure is directed to processes, compositions and agents for inhibiting corrosion in various substrates, for example metal substrates. The present disclosure is also directed to corrosion inhibitors comprising organometallic polymers such as metal-organic frameworks (MOFs), including compositions and processes comprising MOFs for inhibiting corrosion in metal substrates.

Aspects described herein generally relate to a method of coating a metallic surface. The method includes forming a solution including a corrosion inhibitor having one or more thiol moieties and a hydroxide. The metallic surface is coated with the solution to form a treated metallic surface. The treated metallic surface is further coated with an organosilane, an acid, and a metal alkoxide to form a coating system.

Compositions for treating a substrate to provide increased lubricity to portions of the substrate surface that come into contact with the surface of a mating component are provided. The treated substrates provide improved lubricity, while maintaining adhesion between the surface of the substrate and an overlying polymer coating and imparting corrosion resistance to the substrate surface. The compositions include a silanol coupling agent in combination with lubricating particles, and an acid, which are dissolved or dispersed in a mixture of organic solvent and water.

Described herein are compounds for use in coating compositions and methods of using the same. Also described herein is a method of treating metal products (e.g., aluminum alloy products), including applying the coating composition to at least one surface of the metal product. Further described herein is a joined structure, including the coated aluminum alloy product and another metal or alloy. The coating compositions enhance the bond performance of the joined structures.

Disclosed are an abrasion-resistant anti-corrosive coating, and a preparation method and a use thereof. The abrasion-resistant anti-corrosive coating is prepared from a component A and a component B. In the component A, a polyurethane (PU) resin is used as a film-forming material in combination with a corrosion inhibitor, an abrasion-resistant filler, and a body filler. On the basis of the abrasion resistance of the PU resin, the corrosion inhibition of the corrosion inhibitor and the high abrasion resistance of the abrasion-resistant filler improve the abrasion resistance of a coating layer. The use of the body filler reduces a cost of the coating. A thixotropic agent makes the coating have high storage stability. The coating does not include metal components, which avoids an electrochemical potential difference between a coating layer and an alloy, such that the corrosion of the alloy can be effectively controlled.

Phosphorus-containing aqueous polymer dispersions and the use thereof as binders in coating formulations.

A method of corrosion inhibition on a substrate may comprise: applying a sealing solution to an anodized surface of the substrate, wherein the sealing solution may comprise a nanomaterial dopant and a corrosion inhibiting compound, wherein the nanomaterial dopant may comprise at least one of graphene nanoplatelets, carbon nanotubes, and carbon nanofibers, and wherein the corrosion inhibiting compound may comprise at least one of a trivalent chromium compound, a trivalent praseodymium compound, nickel acetate, cobalt acetate, siloxanes, silicates, orthophosphates, molybdates, or a compound comprising at least one of elemental or ionic praseodymium, cerium, cesium, lanthanum, zinc, lithium, magnesium, or yttrium; and drying the sealing solution on the substrate to form a sealing layer comprising the nanomaterial dopant and the corrosion inhibiting compound.

A corrosion inhibiting coating includes a hybrid sol-gel polymer matrix formed from a mixture of organometallic compounds, an organoalkoxysilane, a metal complexing agent, and at least two corrosion inhibiting compounds or species.

The present disclosure relates to agents, compositions, and methods for inhibiting corrosion in various substrates, for example in metal substrates. The present disclosure also relates to compositions for inhibiting corrosion comprising at least one organic heterocyclic compound and at least one metal salt or mixed metal salt selected from rare earth, alkali earth and transition metals.

An anti-corrosion agent can be prepared from a kit-of-parts. The kit-of-parts contains at least one silica sol based composition and at least one aminoalkyl functional siloxane compound. A method can be used for preparing the anti-corrosion agent. An anti-corrosion layer can be prepared with the anti-corrosion agent, and a method can be used for providing the layer.