Provided is an aluminum-resin bonded body that expresses excellent bonding strength and does not show a reduction in the strength after a durability test, thus being able to keep the excellent bonding strength over a long period of time. The aluminum-resin bonded body includes: an aluminum substrate formed of aluminum or an aluminum alloy; an oxygen-containing film containing oxygen, the oxygen-containing film being formed on a surface of the aluminum substrate; and a resin molded body formed of a thermoplastic resin composition containing a thermoplastic resin and an additive, the resin molded body being bonded onto the oxygen-containing film, in which the thermoplastic resin composition contains any one or both of: a thermoplastic resin containing an element having an unshared electron pair in a repeat unit and/or at an end; and an additive containing an element having an unshared electron pair.

Novel formulations of inorganic, chemically bonded, phosphate alumino silicate sprayable coatings are disclosed. The disclosed coatings retain all the positive attributes of similar coatings disclosed in recent patents on corrosion and fire protection, and in addition, provide, superior surface toughness and smoothness, better abrasion and acid resistance, less erosion and longer durability with zero flame-spread coatings on wood surfaces. Being pore-free, water cannot penetrate into these coatings. Unlike the previous inorganic oxide-based phosphate coatings, the glassy phase in these coatings provides a translucent and dense surface. The component pastes are smoother to pump, do not settle or harden during storage and transport, and in addition, do not exhibit pozzalinic properties.

To provide a method for producing a grain-oriented electrical steel sheet that can solve the problem of cracking in steel sheets during final cold rolling and that can stably produce a grain-oriented electrical steel sheet with low iron loss. A production method includes predetermined steps, wherein the conditions: T??4000?A+440, and T?360 are satisfied, where A denotes an average C content in mass % in a predetermined region of the steel sheet after subjection to annealing preceding final cold rolling and before subjection to the final cold rolling, and T denotes a time in hours from just after the completion of the annealing preceding the final cold rolling to just before the start of the final cold rolling, and after the final cold rolling and before the decarburization annealing, pickling treatment is performed with a predetermined treatment solution.

This invention relates to a coating formation composition and a metal material treatment method that are capable of forming a laminate coating in which a chemical conversion coating and a surface treatment coating are laminated by applying and heating the composition on the surface of the metal material, without performing a chemical conversion treatment on the metal material separately from the surface treatment, and that are capable of imparting excellent rust prevention properties to the metal material. The invention provides a coating formation composition comprising an alkoxysilane oligomer, a metal salt, and a solvent, the solvent being water and/or a water-soluble organic solvent, and the metal salt being contained in an amount of 0.1 to 30 parts by mass per 100 parts by mass of the alkoxysilane oligomer.

A sheet steel, in particular strip-shaped blackplate, with a conversion coating which is prepared from components dissolved in water. The components are selected from the group of i) hexafluorotitanate, ii) zinc phosphate, iii) phosphoric acid, iv) a mixture of any of i) to iii), provided that the components i), ii) and iii) do not contain any organic ingredients.

An electrical steel sheet (1) includes a base material (2) of electrical steel, and an insulating film (3) formed on a surface of the base material (2). The insulating film (3) contains a phosphate of one or more selected from the group consisting of Al, Zn, Mg and Ca. A proportion of an amount by mole (mol) of Fe atoms relative to an amount by mole (mol) of P atoms in the insulating film (3) is more than 0.1 but not more than 0.65.

An electrical steel sheet (1) includes a base material (2) of electrical steel, and an insulating film (3) formed on a surface of the base material (2). The insulating film (3) contains a phosphate of one or more selected from the group consisting of Al, Zn, Mg and Ca. A proportion of an amount by mole (mol) of Fe atoms relative to an amount by mole (mol) of P atoms in the insulating film (3) is more than 0.1 but not more than 0.65.

A top cover of battery pack including a metallic coated steel sheet wherein the metallic coating is based on zinc and includes aluminum, magnesium and unavoidable impurities.

Provided is a method of manufacturing a grain-oriented electrical steel sheet having an excellent film adhesion can be obtained. The method of manufacturing a grain-oriented electrical steel sheet includes subjecting a steel slab to hot rolling to obtain a hot-rolled steel sheet, subjecting the hot-rolled steel sheet to cold rolling once to obtain a cold-rolled steel sheet, subjecting the cold-rolled steel sheet to pickling, subjecting the cold-rolled steel sheet to decarburization annealing, applying an annealing separator to a surface of the cold-rolled steel sheet after the decarburization annealing, and subjecting the cold-rolled steel sheet to final annealing, where in the pickling, a solution with an acid concentration of 1.0 mass % to 20 mass % and an Fe ion concentration of 2 mass % to 15 mass % is used, and in the decarburization annealing, a concentration of CO in an atmosphere gas is maintained at 6 vol % or less.

A treatment device is provided for treating a metal object, wherein the treatment comprises at least pickling and phosphating of the object, and, by means of the phosphating, a protective layer is produced on a surface of the object. The treatment device comprises a treatment container for holding the object to be treated and for holding a flowable treatment substance, and a pumping apparatus for circulating at least a portion of the treatment substance. The treatment substance is flowable around at least part of the object to be treated, and is a phosphorus- or phosphate-containing solution. The solution consists of water and a reaction substance, and the reaction substance consists of phosphorus or of a phosphate and at least one additional substance that improves treatment effect. The fraction of the phosphorus or the phosphate in the reaction substance is more than 98 vol % and especially preferably more than 99 vol %.