Abstract: In a projection material for mechanical plating, a steel particle is used as a core, and the surrounding surface thereof is coated with a zinc alloy in which the content of Al is more than 5% by mass but equal to or less than 16% by mass, the content of Mg is equal to or more than 5.5% by mass but equal to or less than 15% by mass and the remaining portion is Zn and an impurity, and the content of Fe is equal to or more than 3% by mass but equal to or less than 80% by mass. In this way, the corrosion resistance of a zinc-based coating itself formed in mechanical plating is remarkably enhanced without dependence on protective coating formation treatment such as chromate treatment.

Abstract: In a projection material for mechanical plating, a steel particle is used as a core, and the surrounding surface thereof is coated with a zinc alloy in which the content of Al is more than 5% by mass but equal to or less than 16% by mass, the content of Mg is equal to or more than 5.5% by mass but equal to or less than 15% by mass and the remaining portion is Zn and an impurity, and the content of Fe is equal to or more than 3% by mass but equal to or less than 80% by mass. In this way, the corrosion resistance of a zinc-based coating itself formed in mechanical plating is remarkably enhanced without dependence on protective coating formation treatment such as chromate treatment.

Abstract: The present invention provides a method for producing a coated stainless steel member, comprising: performing Wood's strike nickel plating on a stainless steel substrate, and then performing cationic electrodeposition on a formed Wood's strike nickel plating layer.

Abstract: Disclosed is an electric Al—Zr alloy plating bath containing an aluminum halide (A), one or more compounds (B) selected from the group consisting of N-alkylpyridinium halides, N-alkylimidazolium halides, N,N?-alkylimidazolium halides, N-alkylpyrazolium halides and N,N?-alkylpyrazolium halides, and a zirconium halide (C). The molar ratio between the aluminum halide (A) and the compounds (B) is from 1:1 to 3:1. The electric Al—Zr alloy plating bath further contains an aromatic organic solvent (D), an organic polymer (E) and one or more additives (F) selected from brightening agents.

Abstract: Provided herein is an electric Al—Zr—Mn alloy-plating bath which comprises (A) an aluminum halide; (B) one or at least two kinds of compounds selected from the group consisting of N-alkylpyridinium halides, N-alkylimidazolium halides, N,N?-dialkyl-imidazolium halides, N-alkyl-pyrazolium halides, N,N?-dialkyl-pyrazolium halides, N-alkylpyrrolidinium halides and N,N-dialkyl-pyrrolidinium halides; (C) a zirconium halide; and (D) a manganese halide, in which the molar ratio of the aluminum halide (A) to the compound (B) ranges from 1:1 to 3:1. The plating bath never involves any risk of causing an explosion and can provide a smooth and fine Al—Zr—Mn alloy-plated film. Moreover, the resulting film has high resistance to corrosion even when it does not contain any chromium and therefore, it is quite suitable from the viewpoint of the environmental protection and it can thus be used in a wide variety of applications including the plating of parts for motorcars, and the plating of parts for electrical appliances.

Abstract: The present invention provides a method for producing a coated stainless steel member, comprising: performing Wood's strike nickel plating on a stainless steel substrate, and then performing cationic electrodeposition on a formed Wood's strike nickel plating layer.

Abstract: Provided herein is an electric Al—Zr—Mn alloy-plating bath which comprises (A) an aluminum halide; (B) one or at least two kinds of compounds selected from the group consisting of N-alkylpyridinium halides, N-alkylimidazolium halides, N,N?-dialkyl-imidazolium halides, N-alkyl-pyrazolium halides, N,N?-dialkyl-pyrazolium halides, N-alkylpyrrolidinium halides and N,N-dialkyl-pyrrolidinium halides; (C) a zirconium halide; and (D) a manganese halide, in which the molar ratio of the aluminum halide (A) to the compound (B) ranges from 1:1 to 3:1. The plating bath never involves any risk of causing an explosion and can provide a smooth and fine Al—Zr—Mn alloy-plated film. Moreover, the resulting film has high resistance to corrosion even when it does not contain any chromium and therefore, it is quite suitable from the viewpoint of the environmental protection and it can thus be used in a wide variety of applications including the plating of parts for motorcars, and the plating of parts for electrical appliances.

Abstract: To provide a barrel electroplating method which is less prone to bare spots and adhesion failure such as blisters and peeling, and which makes it possible to obtain uniform plated coatings free from burnt deposits and poor brightness, irrespective of the amount of workpieces. The present invention provides a method for performing barrel electroplating by use of an aluminum or aluminum alloy plating bath, the method comprising rotating, swinging, or vibrating an anode (6) placed inside a barrel (4) receiving workpieces, and simultaneously rotating, swinging, or vibrating the barrel, with a voltage being applied between the anode and a cathode provided on an inner wall surface of the barrel.

Abstract: Disclosed herein is an electric Al or Al alloy plating bath which comprises (A) an aluminum halide; (B) one kind of compound or at least two kinds of compounds selected from the group consisting of N-alkylpyridinium halides, N-alkylimidazolium halides, N,N?-alkylimidazolium halides, N-alkyl-pyrazolium halides, N,N?-alkylpyrazolium halides, N-alkylpyrrolidinium halides and N,N-alkyl-pyrrolidinium halides; and (C) a high boiling point aromatic hydrocarbon solvent, wherein the molar ratio of the aluminum halide (A) to the compound (B) ranges from 1:1 to 3:1 and the flash point of the plating bath is not less than 50° C. The plating bath never involves any risk of causing an explosion, can be handled industrially with safety and can provide a smooth and fine Al of Al alloy plated film.

Abstract: The present invention provides a method for producing a coated stainless steel member, comprising: performing Wood's strike nickel plating on a stainless steel substrate, and then performing cationic electrodeposition on a formed Wood's strike nickel plating layer.

Abstract: To provide a barrel electroplating method which is less prone to bare spots and adhesion failure such as blisters and peeling, and which makes it possible to obtain uniform plated coatings free from burnt deposits and poor brightness, irrespective of the amount of workpieces. The present invention provides a method for performing barrel electroplating by use of an aluminum or aluminum alloy plating bath, the method comprising rotating, swinging, or vibrating an anode (6) placed inside a barrel (4) receiving workpieces, and simultaneously rotating, swinging, or vibrating the barrel, with a voltage being applied between the anode and a cathode provided on an inner wall surface of the barrel.

Abstract: Provided herein is an electric Al—Zr—Mn alloy-plating bath which comprises (A) an aluminum halide; (B) one or at least two kinds of compounds selected from the group consisting of N-alkylpyridinium halides, N-alkylimidazolium halides, N,N?-dialkyl-imidazolium halides, N-alkyl-pyrazolium halides, N,N?-dialkyl-pyrazolium halides, N-alkylpyrrolidinium halides and N,N-dialkyl-pyrrolidinium halides; (C) a zirconium halide; and (D) a manganese halide, in which the molar ratio of the aluminum halide (A) to the compound (B) ranges from 1:1 to 3:1. The plating bath never involves any risk of causing an explosion and can provide a smooth and fine Al—Zr—Mn alloy-plated film. Moreover, the resulting film has high resistance to corrosion even when it does not contain any chromium and therefore, it is quite suitable from the viewpoint of the environmental protection and it can thus be used in a wide variety of applications including the plating of parts for motorcars, and the plating of parts for electrical appliances.

Abstract: Disclosed herein is an electric Al or Al alloy plating bath which comprises (A) an aluminum halide; (B) one kind of compound or at least two kinds of compounds selected from the group consisting of N-alkylpyridinium halides, N-alkylimidazolium halides, N,N?-alkylimidazolium halides, N-alkyl-pyrazolium halides, N,N?-alkylpyrazolium halides, N-alkylpyrrolidinium halides and N,N-alkyl-pyrrolidinium halides; and (C) a high boiling point aromatic hydrocarbon solvent, wherein the molar ratio of the aluminum halide (A) to the compound (B) ranges from 1:1 to 3:1 and the flash point of the plating bath is not less than 50° C. The plating bath never involves any risk of causing an explosion, can be handled industrially with safety and can provide a smooth and fine Al of Al alloy plated film.

Abstract: Disclosed is an electric Al—Zr alloy plating bath containing an aluminum halide (A), one or more compounds (B) selected from the group consisting of N-alkylpyridinium halides, N-alkylimidazolium halides, N,N?-alkylimidazolium halides, N-alkylpyrazolium halides and N,N?-alkylpyrazolium halides, and a zirconium halide (C). The molar ratio between the aluminum halide (A) and the compounds (B) is from 1:1 to 3:1. The electric Al—Zr alloy plating bath further contains an aromatic organic solvent (D), an organic polymer (E) and one or more additives (F) selected from brightening agents.