A black plated resin part includes a resin substrate, an underlying plating layer formed on the resin substrate, and a black chromium plating layer formed of trivalent chromium and having a thickness of 0.15 μm or more. The black chromium plating layer is formed on the underlying plating layer. The chromium in the black chromium plating layer is present in the form of metallic chromium, chromium oxide, and chromium hydroxide, and the black chromium plating layer exhibits a b* value of 3.0 or less based on the L*a*b* color system.

A black plated resin part includes a resin substrate, an underlying plating layer formed on the resin substrate, and a black chromium plating layer formed of trivalent chromium and having a thickness of 0.15 μm or more. The black chromium plating layer is formed on the underlying plating layer. The chromium in the black chromium plating layer is present in the form of metallic chromium, chromium oxide, and chromium hydroxide, and the black chromium plating layer exhibits a b* value of 3.0 or less based on the L*a*b* color system.

A chromium-based coating including chromium (Cr), carbon (C) and iron (Fe), Cr being electroplated from a trivalent Cr bath. The coating is further includes nickel (Ni) electroplated from the Cr bath having at least 20 mg l−1 Ni cations, in that C is at least partially in the form of at least one chromium carbide compound, in that the coating has been heat-treated at a temperature of 400-1,200° C., and in that the hardness of the coating is at least 1,500 HV on a Vickers microhardness scale as measured according to standard SFS-EN ISO 4516. A method for producing a coating and to a coated object is also disclosed.

A chromium-based coating including chromium (Cr), carbon (C) and iron (Fe), Cr being electroplated from a trivalent Cr bath. The coating is further includes nickel (Ni) electroplated from the Cr bath having at least 20 mg l−1 Ni cations, in that C is at least partially in the form of at least one chromium carbide compound, in that the coating has been heat-treated at a temperature of 400-1,200° C., and in that the hardness of the coating is at least 1,500 HV on a Vickers microhardness scale as measured according to standard SFS-EN ISO 4516. A method for producing a coating and to a coated object is also disclosed.

Provided is a golf shaft, capable of ensuring peeling resistance of a colored layer to endure a bending process and the like. The golf shaft has a metal element tube, and a colored plating layer being a colored layer formed on a surface of the element tube, wherein the colored plating layer has a first strike plating layer on the element tube side, a satin-like plating layer layered on a surface of the first strike plating layer, a second strike plating layer layered on a surface of the satin-like plating layer, and a decorative plating layer layered on a surface of the second strike plating layer and colored according to a color of the colored plating layer.

A method for electrolytically depositing a chromium oxide layer onto i) blackplate or onto ii) blackplate coated with a chromium electrodeposited coating produced based on chromium(III) technology electroplating, and to the coated product obtained thereby.

A method for galvanic application of a surface coating, in particular a chromium coating, to a body, for example a machine component. Before the galvanic application of the surface coating, a layer of a compound that can be oxidized by an electrolyte solution that is used, preferably a polyhydroxy compound with a viscosity of at least 1000 mPas at 25° C., is applied to the body. A method for galvanic application of a surface coating, in particular a chromium coating, to a body, for example a machine component, wherein the surface coating is carried out in a closed reactor in an at least two-stage, preferably three-stage process, is also disclosed. An electrolyte solution contained in the reactor at a temperature T1 for carrying out a subsequent process stage is substituted by an electrolyte solution at a temperature T2≠T1. A device for carrying out this method is also disclosed.

A method for galvanic application of a surface coating, in particular a chromium coating, to a body, for example a machine component. Before the galvanic application of the surface coating, a layer of a compound that can be oxidized by an electrolyte solution that is used, preferably a polyhydroxy compound with a viscosity of at least 1000 mPas at 25° C., is applied to the body. A method for galvanic application of a surface coating, in particular a chromium coating, to a body, for example a machine component, wherein the surface coating is carried out in a closed reactor in an at least two-stage, preferably three-stage process, is also disclosed. An electrolyte solution contained in the reactor at a temperature T1 for carrying out a subsequent process stage is substituted by an electrolyte solution at a temperature T2≠T1. A device for carrying out this method is also disclosed.

A method for electroplating a steel strip with a plating layer and an improvement thereof.

A method for electroplating a steel strip with a plating layer and an improvement thereof.