Method for forming electroplated coating on surface of article
First Claim
1. A method for forming an electroplating film on the surface of an article, which comprises:
- forming on the surface of the article, a resin coating made of a resin containing dispersed therein a powder of a first metal;
then forming a second-metal substituted plating film on the surface of the resin coating by immersing the resin-coated article in a solution containing ions of a second metal having an ionization potential nobler than that of the first metal; and
further forming an electroplating film of a third metal on the surface of the metal-substituted plating film.
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Accused Products
Abstract
An object of the present invention is to provide a method for forming a uniform and dense electroplating film with high adhesion strength on the surface of an article, yet irrespective of the surface material and the surface properties of the article. A means for a solution of the problem comprises: forming on the surface of the article, a resin coating made of a resin containing dispersed therein a powder of a first metal; then forming a second-metal substituted plating film on the surface of the resin coating by immersing the resin-coated article in a solution containing ions of a second metal having an ionization potential nobler than that of the first metal; and further forming an electroplating film of a third metal on the surface of the metal-substituted plating film.
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Citations
20 Claims
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1. A method for forming an electroplating film on the surface of an article, which comprises:
- forming on the surface of the article, a resin coating made of a resin containing dispersed therein a powder of a first metal;
then forming a second-metal substituted plating film on the surface of the resin coating by immersing the resin-coated article in a solution containing ions of a second metal having an ionization potential nobler than that of the first metal; and
further forming an electroplating film of a third metal on the surface of the metal-substituted plating film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- forming on the surface of the article, a resin coating made of a resin containing dispersed therein a powder of a first metal;
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15. A method for forming a substituted plating film on the surface of an article, which comprises:
- forming on the surface of the article, a resin coating made of a resin containing dispersed therein a powder of a first metal, and then forming a second-metal substituted plating film on the surface of the resin coating by immersing the resin-coated article in a solution containing ions of a second metal having an ionization potential nobler than that of the first metal.
- View Dependent Claims (16)
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17. A rare earth permanent magnet having an electroplating film on the surface thereof, which is produced by forming a non-conductive coating on the surface of a rare earth permanent magnet using a resin containing dispersed therein a powder of a first metal;
- then forming a second-metal substituted plating film on the surface of the non-conductive coating by immersing the magnet having formed thereon the non-conductive coating in a solution containing ions of a second metal having an ionization potential nobler than that of the first metal; and
further forming an electroplating film of a third metal on the surface of the metal-substituted plating film.
- then forming a second-metal substituted plating film on the surface of the non-conductive coating by immersing the magnet having formed thereon the non-conductive coating in a solution containing ions of a second metal having an ionization potential nobler than that of the first metal; and
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18. A rare earth permanent magnet having an electroplating film on the surface thereof, comprising, formed on the surface of a rare earth permanent magnet, a non-conductive coating made of a resin containing dispersed therein a powder of a first metal, and having further thereon an electroplating film of a third metal, with a substituted plating film of a second metal that is nobler than the first metal interposed between them.
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19. A rare earth permanent magnet having a substituted plating film on the surface thereof, comprising, formed on the surface of a rare earth permanent magnet, a non-conductive coating made of a resin containing dispersed therein a powder of a first metal, and having further thereon a substituted plating film of a second metal that is nobler than the first metal.
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20. A rare earth permanent magnet having a non-conductive coating on the surface thereof, comprising, formed on the surface of a rare earth permanent magnet, a non-conductive coating made of a resin containing dispersed therein a powder of a first metal.
Specification