Provided is a bilayer composition for surface treatment of a steel plate and a surface-treated steel plate using same. The bilayer composition for surface treatment of a steel plate, comprising an undercoat coating composition including 1 to 12 wt % of a phenoxy resin, 0.001 to 1.0 wt % of colloidal silica, 0.001 to 1.0 wt % of a silane coupling agent, 0.1 to 1.0 wt % of a corrosion inhibitor, 0.001 to 1.0 wt % of a phosphoric acid compound as a long-term corrosion resistance improving agent, and a balance of water; and a topcoat coating composition including 0.1 to 5.0 wt % of an acrylic acid resin, 30 to 50 wt % of colloidal silica, 40 to 60 wt % of alkoxy silane, 5 to 15 wt % of an acrylate-based monomer, 0.01 to 1.00 wt % of an acidity control agent, and a balance of an organic solvent.

The present invention relates to an anticorrosive composition and the use of such a composition for imparting anticorrosive properties to a material, and a material comprising such a composition.

The disclosure provides a composition including a corrosion inhibitor compound and an iron chelating agent. The composition may be used in a method of inhibiting corrosion of a metal surface. The method includes adding the composition to an aqueous system that includes the metal surface. The composition may be applied to the metal surface, for example, using batch treatment techniques.

The present disclosure provides methods of protecting a substrate from corrosion. The methods include applying a coating composition to a surface of the substrate. The coating composition includes a corrosion inhibitor including a metal organic framework (MOF). The metal organic framework includes a metal ion coordinated to one or more organic ligands. The one or more organic ligands include at least one exocyclic sulphur group. The metal ion of the MOFs includes a rare earth metal or transition metal. The coating composition includes a sealant including a non-stoichiometric sensitive composition and an activator.

A method of forming a corrosion inhibiting composition is disclosed, including performing a simulation of candidate thiosemicarbazone derivative molecules to determine a solubility parameter associated with a structure of the plurality of candidate thiosemicarbazone derivative molecules, selecting one or more bulky substituent groups to react with a thiosemicarbazone based on one or more results of the simulation, adding the one or more bulky substituent group, which may include an amine-functional group, to a reaction vessel. The method also includes generating a dithiocarbamate quaternary ammonium salt including one of the bulky substituent groups and precipitating a thiosemicarbazone derivative having one of the bulky substituent groups. The one or more bulky substituent groups may include a cyclohexyl group, a 2-ethyl group, a 3-ethyl group, such as 2-ethylphenyl and 3-ethylphenyl, or a combination thereof. Additional methods incorporating polar substituent groups and corrosion inhibiting compositions and treatments are also disclosed.

The present invention addresses the problem of providing: a metal surface treatment agent which can form a film having excellent corrosion resistance and excellent hydrophilicity on or over a surface of a metal material; a method of producing a metal material having a film by using the metal surface treatment agent; and a metal material having a film, which is obtained by the method. A chemical agent, which contains prescribed amounts of a water-soluble or water-dispersible resin (A) and a compound (B) having a nitrile group and an amino group, is capable of forming a film having excellent corrosion resistance and excellent hydrophilicity on or over a surface of a metal material and, therefore, can solve the above-described problem.

The present invention is directed to a coating composition comprising a film-forming binder; and a corrosion inhibitor comprising at least one of morpholines, monosulfides, and/or piperazines. The present invention is also directed to coatings, coated metal substrates, multi-layered coated metal substrates, and methods of coating substrates.

The present invention reveals an improved coating composition for the production of necessary dielectric layers within the radio frequency identification (RFID) tag antennas, that can be applied by spraying, printing, or any other suitable graphic technology. The composition essentially consists of dielectric material such as barium titanate (BaTiO.sub.3), of particles size 48-500 nm, 10.00-40.00% w/w, polyvinylpyrrolidone (PVP) as a polymeric dispersant and polyvinyl alcohol (PVOH) as a polymeric binder per 1.00-10.00% w/w each, a water-miscible solvent such as isopropanol, 30.00-55.00% w/w, and up to 100% w/w of demineralized water. The composition according to the present invention is used for forming a flexible dielectric coating in the manufacturing of RFID tags.

A treated additive manufactured article is disclosed. The article comprises a shaped metal alloy having a treated surface layer and a core. At least one of the average hardness of the treated surface layer is greater than the average hardness of the core, and the average corrosion resistance of the treated surface layer is greater than the average corrosion resistance of the core.

A method for inhibiting corrosion of a corrodible metal surface that contacts a water stream in a geothermal well system. The method includes introducing into the water stream a corrosion inhibitor composition comprising: (i) a cationic surfactant, such as an imidazoline and/or a fatty amine ethoxylate, and (ii) an anionic surfactant.