A method includes providing a workpiece with at least one surface having an anodized aluminum coating and a trivalent chromium sealant. The at least one surface of the workpiece is submerged in a post-treatment sealant solution for 0.5 to 20 minutes. The sealant composition consists essentially of a corrosion inhibitor, an organic complexing agent, and an oxidant.

A process involves the continuous surface treatment of stainless steel coils with aqueous suspensions of rare earth oxide nano or micro particles or aqueous rare earth nitrate solutions of nano or micro particles. The surface treatment can be applied by roll coating, spraying or other conventional application techniques. The treated material in coil form is then heated in an annealing box using an open coil process whereby a wire is placed between coil laps to promote uniform atmosphere exposure. The atmosphere can be reducing or oxidizing and the times can vary from 1 hr to 100 hr. The atmosphere can also be wet (high dew point) or dry (low dew point). The surface treatment promotes a more uniform color to the subsequently developed oxide formed during anneal-type heat treatment. It also improves corrosion resistance of the processed stainless steel material. Materials treated in this manner are suitable for a variety of applications in the building systems, automotive and appliance markets.

The present invention relates to a process for applying a topcoat to at least one side of a substrate, comprising a step (a) of at least partly coating at least one substrate metal surface, at least partly coated with at least one primer coat, with an aqueous coating composition which comprises at least one polymer dissolved or dispersed therein, the coating composition further comprising at least one mixed hydroxide of the general formula (I), and the process being a coil coating process; to a topcoat applied to at least one side of the substrate and obtainable by this process; to a substrate at least partly coated on at least one side with a topcoat by this process; and also to a use of this coating composition for at least partly coating at least one substrate metal surface, at least partly coated with at least one primer coat, with a topcoat in a coil coating process.

Provided are a surface-treated metal sheet excellent in the adhesiveness to a coating treatment film and weldability and a coated member. The surface-treated metal sheet includes a metal sheet and a coating film placed on at least one major surface of the metal sheet; the coating film contains oxide particles, a binder resin, and electrically conductive particles; the amount of electrically conductive particles contained is 5 to 30 mass % relative to the coating film; the oxide particles include non-doped oxide particles and/or doped oxide particles; the non-doped oxide particles include at least one kind selected from the group consisting of zinc oxide particles, tin oxide particles, magnesium oxide particles, calcium oxide particles, and strontium oxide particles; the doped oxide particles include at least one kind selected from the group consisting of doped zinc oxide particles and doped tin oxide particles; the amount of oxide particles contained is 1 to 30 mass %, but is 1 to 10 mass % relative to the coating film in the case of not including doped oxide particles; and the amount of the coating film attached to the major surface is 2 to 20 g/m.sup.2.

A composite thermoelectric material includes: a thermoelectric material of an intermetallic compound series; and a film that is coated over the whole or a part of the surface of the thermoelectric material and contains aluminum phosphate (AlPO.sub.4) as a main component. Such a composite thermoelectric material is obtained by: applying a coating liquid obtained by dispersing or dissolving aluminum phosphate (AlPO.sub.4) into a solvent over the surface of a thermoelectric material; drying the coating liquid and obtaining a precursor film; and firing the thermoelectric material over which the precursor film is formed.

The invention relates to a composition used as a fire-resistant, insulating, ecological and corrosion-inhibiting coating, comprising: 23-50% water, 4-20% diatomite C110 (Celite C110), 2-8% manganese oxide, 3-10% calcined alumina, 7-24% elastomeric acrylic resin, 1-4% acrylic thickener, 0.3-2% ammonium hydroxide, and 5-14% ceramic fiber. Preferably, the composition also includes optionally the following components in order to provide the fire-resistant, insulating, ecological and corrosion-inhibiting properties: 1-7% titanium bioxide, 1-9% hexylenglycol, 2-18% dibutyl phthalate, 1-9% texanol, 0.7-4% fungicide, or 0.4-3% anti-foaming agent.

Magnesium hydroxide particles having a particle size of less than 200 nm and corrosion resisting properties are disclosed. Also disclosed are suspensions and powders that include the corrosion resisting particles. Coating compositions that include the corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties, and substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating layer is deposited from such a coating composition, are also disclosed.

The present disclosure is directed to the agents, compositions, and methods for inhibiting corrosion in various substrates, for example in metal substrates. The compositions for inhibiting corrosion comprise 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 object is to provide an environmentally benign metal member having excellent corrosion resistance which exhibits a long-lasting corrosion resistance effect even in a saltwater environment or the like in which a water current is present, without requiring an external factor such as ultraviolet light. Provided is a metal member having excellent corrosion resistance in which at least a surface is made of an aluminum-based metal, the metal member comprising a corrosion protection film containing a poorly water-soluble lithium compound on the surface or a solid material containing a poorly water-soluble lithium compound on the surface.

A method of disposing a corrosion resistant system to a substrate may comprise applying a plating material to the substrate; forming a chemical conversion coating solution by combining a solvent, at least one corrosion inhibitive cation comprising at least one of zinc, calcium, strontium, magnesium, or aluminum, at least one corrosion inhibitive anion comprising at least one of phosphate, molybdate, or silicate, and a complexing agent; and applying the chemical conversion coating solution to the plating material on the substrate.