In examples, a method for forming a high temperature coating includes applying a barrier coat formulation on a substrate. The barrier coat formulation includes mono-aluminum phosphate; boron carbide; and molybdenum or a molybdenum compound. The method further includes heat treating the barrier coat formulation to form an oxidation-resistant coating layer, wherein a melting point of the oxidation-resistant coating layer is greater than about 800 degrees Celsius ( C.).

Hexavalent chromium-free slurry formulations which are suitable in the production of inorganic overlay coating systems are described. The formulations provide superior hot corrosion and high-temperature oxidation protection for superalloy substrates. A basecoat slurry and topcoat slurry are provided. The basecoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:P higher than about 1:3 with the incorporation of pigments of either metallic particles, or metal oxide particles, or both in combination. The topcoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:P higher than about 1:3. An inorganic overlay coating formed on substrate made from the slurry formulation of present invention for hot corrosion protection on superalloy substrate against hot corrosion. Furthermore, a multilayer coating comprises a metallic bond coat and an inorganic overlay coating formed on superalloy substrate to further enhance high-temperature oxidation and hot corrosion protection.

An electrical assembly includes a metallic component having a bottom portion that is buried in the earth, a top portion that is above the earth, and an outer surface. A water-impermeable electrically-conductive covering is applied to the outer surface at the bottom portion and is in electrical contact with the earth. The covering includes a water-impermeable polymeric matrix that protects the metallic component from corrosion, and a particulate carbonaceous material that is dispersed in the polymeric matrix and that allows for the metallic component to be electrically grounded.

A system and a method for protecting a metal surface from corrosion using a multilayer protective coating are provided. The multilayer protective coating includes a barrier layer and a corrosion inhibitor layer. The corrosion inhibitor layer includes particles that include a corrosion inhibitor.

The present invention relates to a composition comprising (A) at least one carboxy-functional polyester having an acid number in the range from 20 to 250 mg KOH/g, prepared using at least one difunctional monomer (a1) with aliphatic groups having 12 to 70 carbon atoms between the functional groups, and also (B) at least one synthetic layered hydroxide, where the at least one layered hydroxide (B) is prepared in the presence of the polyester (A). The present invention further relates to the preparation of the composition and also to the use of the composition as coating material.

Disclosed are coating compositions, methods for preparing the coatings and coatings made therefrom. The coatings have durable functional and damage healing properties. In some embodiments, compositions include a liquid media, surface modified diatomaceous earth (SMDE) particles chemically modified to impart a desired fluid wettability suspended in the liquid media, and microcapsules suspended in the liquid media. The SMDE particles are chemically modified through the use of various silanes imparting hydrophobicity, hydrophilicity, oleophobicity, or oleophilicity. In certain embodiments, the SMDE particles and the microcapsules are in different coating layers. In certain embodiments, compositions are in the form of powder coatings including mixtures of powder epoxy particles, SMDE particles chemically modified to impart a desired fluid wettability, and microcapsules. Disclosed further are methods for coating articles with the coatings and the coated articles.

A thermal spray coating according to the present invention contains mainly magnesium, aluminum, oxygen, and nitrogen and has, as a main phase, a crystal phase of a MgOAlN solid solution in which aluminum nitride is dissolved with magnesium oxide. The thermal spray coating is obtained by thermal spray of powder of a ceramic material containing mainly magnesium, aluminum, oxygen, and nitrogen and having, as a main phase, a crystal phase of a MgOAlN solid solution in which aluminum nitride is dissolved with magnesium oxide.

An electrically conducting organic-inorganic sol-gel derived coating. Films are generated exhibiting good electrical conductivity with high resistance to substrate delamination. PEDOT:PSS is used as the conducting polymer dispersed within an organic-inorganic hybrid sol-gel.

The present disclosure relates to coatings comprising functionalized graphene(s) and polymers (resins). In accordance with the disclosure, graphene can be used with functionalization with polymers (resins) with or without pigments, fillers, reactive catalysts or accelerators as finishes to protect roll steel, galvanized roll steel, equipment, automobiles, ships, construction and marine structures from corrosion, fouling and UV deterioration.

Disclosed herein are corrosion-resistant composites. In particular, the composites can include a piezoelectric material embedded within a binding medium that can impede or inhibit the corrosive effects caused by salts and acids. Also disclosed herein are methods of making the composites and methods of protecting a concrete or concrete-related substrate from corrosion.