Process and apparatus for nickel plating and nickel-plated product
AssigneeToshiba Tec Kabushiki Kaisha
InventorsTakashi Harakawa, Hideaki Nonaka
Life of this patent
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Abstract
According to the present invention, Ni-B is electrolessly deposited on an object and then Ni-P is electrolessly deposited on the surface of the Ni-B layer formed on the object. In this process, if any dry area is present on the Ni-B layer where moisture has been evaporated after the Ni-B depositing step and before the Ni-P depositing step, it is difficult to form a uniform Ni-P layer on the Ni-B layer in such area. Accordingly, an additional step is provided for preventing the Ni-B layer formed on the object from drying after the Ni-B plating step and before the Ni-P plating step. In this way, a uniform Ni-P layer can be electrolessly deposited on the electrolessly deposited Ni-B layer.
Claims11
A process for nickel plating, comprising the steps of:
- electrolessly plating a Ni-B layer on a substrate;
- subjecting the plated substrate to a drying-protection treatment for preventing the Ni-B layer formed on the substrate from drying;
- and then,
- electrolessly plating a Ni-P layer on the Ni-B layer formed on the substrate.
An apparatus for nickel plating, comprising:
- a Ni-B plating bath containing a Ni-B plating solution in which a substrate is immersed for electroless Ni-B deposition;
- a Ni-P plating bath containing a Ni-P plating solution in which the substrate having the Ni-B layer formed thereon is immersed for electroless Ni-P deposition;
- a transporting member for transporting the substrate from the Ni-B plating bath to the Ni-P plating bath;
- and
- a drying-protection means for preventing drying of the Ni-B layer formed on the substrate during the transportation of the substrate from the Ni-B plating bath to the Ni-P plating bath.
A nickel plated product, comprising:
- a substrate;
- a Ni-B layer which is electrolessly plated on the surface;
- and
- a substantially uniform Ni-P layer which is electrolessly plated on the entire surface of the Ni-B layer.
Dependencies are inferred from the claim text.