Provided is a coated metal sheet for automobile comprising: a metal sheet; and a coating film () present on at least one surface of the metal sheet. The coating film () contains an organic resin (A), an electrically conductive pigments (B), and anti-corrosion pigments (C), and a Martens micro-hardness HM at 20 C. of the surface of the coating film () is 10 to 200 (mg/mm.sup.2) at 20 points or more when measured at 100 points, and a Martens micro-hardness HM at 40 C. of the surface of the coating film () is 200 to 200,000 (mg/mm.sup.2) at 5 points or more when measured at 100 points.

A composition comprising a carrier medium, a first corrosion inhibitor, and a second corrosion inhibitor having a barrier mechanism. The first corrosion inhibitor comprises at least one of an ion exchanged pigment, a silica, a calcium exchanged silica, an oxyaminophosphate salt of magnesium, and/or a mixture of an organic amine, a phosphoric acid and/or an inorganic phosphate and a metal oxide and/or a metal hydroxide, and the second corrosion inhibitor comprises one or more 2D material platelets in which the 2D material platelets comprise: nanoplates of one or more 2D materials and or nanoplates of one or more layered 2D materials and or graphite flakes in which the graphite flakes have one nanoscale dimension and 35 or less layers of atoms.

Provided is a primer composition capable of forming, in a short time, a primer coating film excellent in adhesion to a metal substrate, adhesion to a polyamide resin-containing finish coating film, and corrosion resistance. A primer composition comprises: a phenol resin (A); a polyamide resin (B); and a solvent (C), wherein the phenol resin (A) is a resol-type phenol resin, the polyamide resin (B) is soluble in the solvent (C), and a solid content mass ratio (A/B) between the phenol resin (A) and the polyamide resin (B) is 80/20 to 99/1.

Disclosed is a system for treating a substrate surface. The system includes a conditioner composition and a first pretreatment composition. The conditioner composition comprises a hydroxide source and the first pretreatment composition comprises a magnesium element, a halide element, and an oxidizing agent. Methods of treating a substrate surface using the conditioner composition and the first pretreatment composition also are disclosed. Also disclosed are substrates treated with the system and method.

A coating for vehicle components, such as frame assemblies and cradle assemblies formed of steel, is provided. The coating includes a first layer including a high phosphate composition applied to the substrate, and a second layer including wax applied to the first layer. For example, the first layer can include a first inorganic acid, an inorganic salt, a second inorganic acid, nickel salt, and ammonium bifluoride; and the second layer can include petroleum, carbon black pigment, and a corrosion inhibitor, the corrosion inhibitor including magnesium. The coating has been found to improve corrosion resistance when applied to steel substrates, compared to wax coatings which are currently applied to steel substrates.

A rustproofed metal member of a metal member having a predetermined shape, a zinc composite film formed on a surface of the metal member, and a coating film formed by applying and drying a coating paint on the zine composite film. The coating paint includes a coating base containing an organic solvent and a resin material dissolved in the organic solvent, and an extender pigment and an antirust pigment dispersed and retained in the coating base. The antirust pigment includes aluminum flakes having been subjected to no leafing process.

A coating composition and a method of making a coating composition is provided. The coating composition includes: a) a binder system comprising a mixture of a caramelized carbohydrate component, an inorganic colloidal binder, and an adjuvant; and b) a protective agent. The coating composition is useful for protecting articles from corrosion and/or erosion caused by contact with molten metal.

A coating liquid includes aluminum phosphate, a nonionic surfactant, and water and/or water-soluble solvent that dissolves or disperses the aluminum phosphate and the nonionic surfactant. An amount of the nonionic surfactant is preferably 1 vol % or more and 10 vol % or less. The nonionic surfactant is preferably at least one selected from the group consisting of ester, ether, alkylglycoside, octylphenol ethoxylate, pyrrolidone, and polyhydric alcohol. Applying such a coating liquid to a surface of a thermoelectric member, and drying and firing the coating liquid enables formation of a dense antioxidant film containing aluminum phosphate on the surface of the thermoelectric member.

Both a coating composition comprising a thermosetting resin system and a kit for producing a coating composition using a thermosetting resin system are provided. The coating composition and the kit comprise graphene nanoplatelets, and one or more of a natural or a synthetic oil, silver nanoparticles, a copper powder, titanium nanoparticles, and sepiolite. In the coating composition of the invention and in the coating composition produced from the kit of the invention, the graphene nanoplatelets, natural oil or synthetic oil, silver nanoparticles, copper powder, titanium nanoparticles, and sepiolite are dispersed in the thermosetting resin system.

The present disclosure relates to a battery cell tray, which is a tray configured to accommodate a plurality of cylinder type battery cells in a storage of a first packaging member, including a first tray member having a plate type structure in which a plurality of first recessed portions surrounding one side end portions of the battery cells are formed; and a second tray member having a plate type structure in which a plurality of second recessed portions surrounding the other side end portions facing the one side end portions of the battery cells are formed, and the first and second tray members includes a volatile rust inhibitor which is vaporized at room temperature to form a rust-proofing film on surfaces of the battery cells.