Abstract:
A separator for a fuel cell according to the present invention includes: a base 1 containing 70 mass % or more of Al; an underlying layer 2 being formed on the base and containing Ti; an intermediate layer 3 being formed on the underlying layer and containing TiNx or TiOy; and a conductive metal layer 4 being formed on the intermediate layer and containing Au or Pt. The separator for a fuel cell according to the present invention has an excellent anticorrosiveness although a base containing aluminum as a main component is used.
Abstract:
A silver-coated ball 10 according to the present invention includes: a spherical core 1; and a coating layer 2 including silver superfine particles, which is arranged so as to surround the core 1. The silver superfine particles included in the coating layer 2 have a mean particle size of 1 nm to 50 nm.
Abstract:
A screw for use in a radio wave receiver includes a metal screw body that includes a shank and a head, and an insulation resin layer formed on at least a back of the screw head. In the radio wave receiver, a back cover and a case are secured together firmly by a threaded engagement of a threaded part of the shank, on which no insulation resin layer is formed, with a screw hole formed in the case while the insulation resin layer is disposed therebetween.
Abstract:
A silver-coated ball 10 according to the present invention includes: a spherical core 1; and a coating layer 2 including silver superfine particles, which is arranged so as to surround the core 1. The silver superfine particles included in the coating layer 2 have a mean particle size of 1 nm to 50 nm.
Abstract:
A silver-coated ball 10 according to the present invention includes: a spherical core 1; and a coating layer 2 including silver superfine particles, which is arranged so as to surround the core 1. The silver superfine particles included in the coating layer 2 have a mean particle size of 1 nm to 50 nm.
Abstract:
An electroless Ni—P plating method according to the present invention includes the steps of: providing a substrate including an insulating substrate and a copper alloy layer that has a predetermined pattern including a plurality of island portions that are isolated from each other; providing a plating solution to carry out electroless Ni—P plating; providing a solid piece including Ni, Ni—P, Co or Co—Ni on at least the surface thereof; and bringing the solid piece into contact with the surface of at least two of the island portions that are both in contact with the plating solution, thereby selectively forming an electroless Ni—P plated coating on the surface of the island portions. Thus, the present invention provides a Ni—P plating method that can subject the copper pattern on the insulating substrate to high-precision selective Ni—P plating on an industrial basis.
Abstract:
Disclosed is a method of manufacturing a composite ball for electronic parts by preparing a core ball with spherical shape, forming a solder-plated layer encompassing the core ball to obtain a composite ball, and then conducting a smoothing work on the surface of the solder-plated layer, therein the smoothing work is preferably conducted by bringing a medium into contact with the surface of the solder-plated layer.
Abstract:
A separator for a fuel cell according to the present invention includes: a base 1 containing 70 mass % or more of Al; an underlying layer 2 being formed on the base and containing Ti; an intermediate layer 3 being formed on the underlying layer and containing TiNx or TiOy; and a conductive metal layer 4 being formed on the intermediate layer and containing Au or Pt. The separator for a fuel cell according to the present invention has an excellent anticorrosiveness although a base containing aluminum as a main component is used.
Abstract:
The disclosed rolling piston type compressor comprises a needle bearing sandwiched between two bearing washers and serving as a thrust bearing for a rotary shaft and a resilient sealing ring of polytetrafluoroethylene press fitted into a space defined by the outer periphery of the needle bearing and the two bearing washers. Alternatively the sealing ring may be formed of cast iron and seal the space with an oil film disposed in a clearance between the ring and one of the bearing washers.
Abstract:
An electroless Ni—P plating method according to the present invention includes the steps of: providing a substrate including an insulating substrate and a copper alloy layer that has a predetermined pattern including a plurality of island portions that are isolated from each other; providing a plating solution to carry out electroless Ni—P plating; providing a solid piece including Ni, Ni—P, Co or Co—Ni on at least the surface thereof; and bringing the solid piece into contact with the surface of at least two of the island portions that are both in contact with the plating solution, thereby selectively forming an electroless Ni—P plated coating on the surface of the island portions. Thus, the present invention provides a Ni—P plating method that can subject the copper pattern on the insulating substrate to high-precision selective Ni—P plating on an industrial basis.