Abstract:
Provided is a plating solution for a threaded connection for pipe or tube used for forming a plating film excellent in galling resistance, crevice corrosion resistance, and exposure corrosion resistance. The plating solution for a threaded connection for pipe or tube of the present embodiment contains no cyanide, but contains: a water-soluble copper salt; a water-soluble tin salt; a water-soluble bismuth salt; a free acid; and a thiourea-based compound of 10 g/L or less (excluding 0) that is represented by Chemical Formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒX 1 X 2 N-C(=S)-NX 3 X 4 €ƒ€ƒ€ƒ€ƒ€ƒ(1), where each of X 1 , X 2 , X 3 , and X 4 is any one of hydrogen, an alkyl group, an allyl group, a tolyl group, or a group represented by Chemical Formula (2), but excluding that X 1 , X 2 , X 3 , and X 4 are all hydrogen: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ-CH 2 -CH 2 -S-CH 2 -CH 2 -X 5 €ƒ€ƒ€ƒ€ƒ€ƒ(2), where X 5 is OH or NH 2 .
Abstract:
Polymers of reaction products of polyamines and nitrogen containing cyclic compounds are included in metal electroplating compositions to provide level metal deposits on substrates.
Abstract:
The present invention provides a surface-treated copper foil capable of imparting the profile shape of the substrate surface after removal of the copper foil, the profile shape maintaining fine wiring formability and achieving satisfactory adhesion of electroless copper plating coating. The present invention also provides a resin substrate provided with a profile shape of the surface maintaining fine wiring formability and achieving satisfactory adhesion of electroless copper plating coating. The surface-treated copper foil of the present invention is a surface-treated copper foil having a surface-treated layer formed on a copper foil, and the surface roughness Sz of the surface of the surface-treated layer is 2 to 6 µm.
Abstract:
Herein is described an apparatus, for carrying out a method of plating articles, the apparatus comprising: a container for holding a plating solution, a receptacle for holding a plurality of articles within the plating solution, and, a means for agitating the plating solution before and/or during the plating wherein the receptacle for holding a plurality of articles within the plating solution is configured to move during the plating process, wherein the means for agitating the plating solution before and/or during the plating, is: (i) located in an agitation unit, that is separate from the container for holding the plating solution in which the articles are plated, and the apparatus is adapted to circulate the plating solution from the container for holding the plating solution in which the articles are plated to the agitation unit, in which the plating solution is agitated by subjecting the plating solution to high shear, before and/or during plating of the articles, and then return the plating solution to the container for holding the plating solution in which the articles are plated; and/or (ii) a means for subjecting the plating solution to an ultrasound treatment. A method for plating articles is also described.
Abstract:
The present invention relates to a cyanide-free electrolyte which contains a phosphate and aliphatic or aromatic thio compounds and also to a process for the electrolytic deposition of an alloy of the elements copper and tin and optionally zinc. The electrolyte and the process are characterized in that stannate ions and copper ions and optionally zinc(II) ions and also aliphatic and/or aromatic thio compounds are present in the electrolyte used. The electrolyte can optionally additionally contain carboxylic acids, wetting agents and/or brighteners. The present invention further provides a process for the electrolytic deposition of alloys of copper, tin and optionally zinc on consumer goods and decorative goods using the electrolyte of the invention.
Abstract:
Polymers of reaction products of polyamines and nitrogen containing cyclic compounds are included in metal electroplating compositions to provide level metal deposits on substrates.
Abstract:
Reaction products of one or more amino acids and one or more epoxies are included in copper and copper alloy electroplating baths to provide good throwing power. Such reaction products may plate copper and copper alloys with good surface properties and good physical reliability.