An electrical steel sheet has an insulation coating on a steel sheet surface. The insulation coating includes: a binder consisting of 100 parts by mass of a metal phosphate and 1 to 50 parts by mass of an organic resin having an average particle size of 0.05 to 0.50 m; and a carboxylic acid-containing compound with a carbon number of 2 to 50 in an amount of 0.1 to 10.0 parts by mass based on 100 parts by mass of solids content of the binder. The organic resin is at least one selected from the group consisting of acrylic resins, epoxy resins, and polyester resins. The insulation coating of this electrical steel sheet shows good edge corrosion resistance after blanking.

The invention relates to a method for creating a diffused thin film surface treatments on one or more interior surfaces of closed or partially closed fluid transport or processing systems providing improved surface prophylaxis against fouling. The method involves contacting the interior surfaces to be treated with a metal compound composition, and converting the metal compound composition to metal oxide for example by heating the surfaces to the desired temperature after all or a part of the system has been assembled. Embodiments of the present invention can be performed in situ on existing fluid processing or transport systems, which minimizes the disruption to the surface treatment created by welds, joints, flanges, and damage caused by or during the system assembly process.

One or more techniques are disclosed for a method for functionalized a graphitic material comprising the steps of: 1) providing a graphitic material; 2) providing a first molecule comprising a first group, a spacer, and a second group; 3) providing a second molecule comprising a third group, a spacer, and a fourth group, wherein the third group is a different group from the first group; and 4) bonding the first molecule and the second molecule to the graphitic material. Also disclosed is a tunable material composition comprising the functionalized carbon nanotubes or functionalized graphene prepared by the methods described herein.

A ZnAl layered double hydroxide (LDH) composition is added to a solution including a corrosion inhibitor and stirred, and a precipitate of the solution is collected, washed, and dried to form a corrosion inhibiting material (CIM), in which the LDH composition is intercalated with the corrosion inhibitor. An inorganic CIM and/or an organic CIM may be formed. The organic CIM may be added to a sol-gel composition to form an organic CIM-containing sol-gel composition, and the inorganic CIM may be added to a sol-gel composition to form an inorganic CIM-containing sol-gel composition. Further, the organic CIM-containing sol-gel composition may be applied on a substrate (e.g., an aluminum alloy substrate) to form an organic CIM-containing sol-gel layer and cured by ultraviolet (UV) radiation, the inorganic CIM-containing sol-gel composition may be applied on the substrate to form an inorganic CIM-containing sol-gel layer and cured by UV radiation, and the sol-gel layers may be thermally cured.

A method of forming a passivated pigment slurry includes combining a resin and a pigment to form a pigment-resin slurry, wherein the pigment includes a plurality of flakes each having a surface. After combining, the method includes firstly reacting an orthosilicate and the pigment in the presence of the resin to form a coated pigment-resin slurry. The coated pigment-resin slurry includes the resin and a coated pigment including the plurality of flakes each encapsulated by a first layer formed from the orthosilicate on the surface. The method further includes, concurrent to or after firstly reacting, secondly reacting the coated pigment-resin slurry and an organosilane compound having a hydrolysable group and an organic group to coat the first layer and form the passivated pigment slurry. The passivated pigment slurry includes the resin and a passivated pigment including the plurality of flakes each coated with a second layer disposed on the first.

One or more techniques are disclosed for a method for functionalized a graphitic material comprising the steps of: 1) providing a graphitic material; 2) providing a first molecule comprising a first group, a spacer, and a second group; 3) providing a second molecule comprising a third group, a spacer, and a fourth group, wherein said third group is a different group from said first group; and 4) bonding the first molecule and the second molecule to the graphitic material. Also disclosed is a tunable material composition comprising the functionalized carbon nanotubes or functionalized graphene prepared by the methods described herein.

The present invention relates to a film-forming composition for a metal surface (10), which composition comprises at least one vinyl polymer and/or one vinyl copolymer that is water-soluble, an aqueous solvent and solid alumina (Al.sub.2O.sub.3) particles dispersed in the aqueous solvent, the respective proportions of the composition are, relative to the total weight of the composition: vinyl polymer and/or a vinyl copolymer: 5 to 25% by weight, Al.sub.2O.sub.3: 0.2 to 10% by weight, and aqueous solvent: 70 to 95% by weight.

The present invention also relates to a method for applying the composition, a film (20) obtained by the method, a pipe having this film and the use of such a film for protecting a metal surface against hydrogen embrittlement.

To repair reinforced concrete easily and at low cost. An anticorrosion method includes infiltrating an anticorrosion solution held inside concrete of reinforced concrete into a vicinity of a reinforcing bar through the concrete to passivate the reinforcing bar, detecting that the anticorrosion solution is infiltrated to a surface of the concrete, and discharging, after detecting the anticorrosion solution, the anticorrosion solution to outside of the concrete to form an anticorrosive coating on a surface of the reinforcing bar.

Certain configurations of coated articles that are corrosion resistant are described. In some embodiments, the article comprises a substrate and a corrosion resistant coating disposed on an entire surface or a portion of the surface of the substrate. The corrosion resistant coating can resist degradation after exposure to strong acids with a negative pH with a corrosion rate of less than 20 mils/year. The coating can also, if desired, exhibit a hardness of more than 600 Vickers hardness (HV), as measured based on the ASTM E92-17 standard.

The disclosure relates to a coating composition comprising: a) a resin system comprising an organic film-forming resin and optionally a curing agent reactive with the organic film-forming resin, b) a lithium salt with a solubility in water in the range from 0.01 to 120 g/L at 20 C., selected from the group consisting of lithium carbonate, lithium phosphate, lithium bicarbonate, lithium tetraborate, and lithium oxalate, in an amount of at least 1.3 wt. % of lithium based on solid weight of the resin system, and c) a zinc salt of 2,5-dimercapto-1,3,4-thiadiazole (DMTD). The zinc salt of DMTD was shown to have a synergistic effect on the reinforcement of barrier properties of a protective layer that is formed in a coating defect due to the presence of the lithium salt in the coating composition.