摘要:
The invention relates to a chromium-based coating comprising at least one layer rich in crystalline phase or phases of nickel (Ni) and/or Ni compounds, and at least one layer rich in crystal-line phase or phases of chromium (Cr) and/or Cr compounds, Cr being electroplated from a trivalent chromium bath. The coating is characterized in that the it further comprises one or more crystalline phases of chromium-nickel-phosphorus (CrNiP), which CrNiP phase has been produced by heat treating a coating comprising at least one layer of nickel-phosphorus (NiP) and at least one layer of Cr. The invention also relates to a method for producing a chromiumbased coating and to a coated object.
摘要:
A method for forming an organic coating on a surface of nickel or nickel alloy is disclosed. The method includes contacting the nickel surface with a composition comprising a specific pyrazine derived compound to prevent corrosion of nickel without forming known gold immersion film on the surface of the nickel.
摘要:
There is provided a metal plate coated stainless material (100) which includes a stainless steel sheet (10) having formed thereon a passivation film (11) having a Cr/O value in the range of 0.05 to 0.2 and a Cr/Fe value in the range of 0.5 to 0.8 at the surface as measured by an Auger electron spectroscopy analysis and a metal plated layer (20) formed on the passivation film (11) of the stainless steel sheet (10), in which the metal plated layer (20) is a plated layer formed from any one metal selected from among Ag, Pd, Pt, Rh, Ru, Cu, Sn and Cr, or an alloy of these metals.
摘要:
A method for forming a conductive pattern on a substrate (208) includes providing an image pattern for imaging on the substrate; imaging the image pattern on the substrate creating imaged areas; spraying functional material (232) on the substrate that diffuse molecules of the functional material into the imaged areas; and applying electro-less copper coating that build conductive material traces on the imaged areas on the substrate.
摘要:
The present invention provides a surface-independent surface-modifying multifunctional biocoating and methods of application thereof. The method comprises contacting at least a portion of a substrate with an alkaline solution comprising a surface-modifying agent (SMA) such as dopamine so as to modify the substrate surface to include at least one reactive moiety. In another version of the invention, a secondary reactive moiety is applied to the SMA-treated substrate to yield a surface-modified substrate having a specific functionality.
摘要:
A method of selectively and electrolessly depositing a metal onto a substrate having a metallic microstructured surface is disclosed. The method includes forming a self-assembled monolayer on the metallic microstructured surface, exposing the self-assembled monolayer to an electroless plating solution including a soluble form of a deposit metal, and depositing electrolessly the deposit metal selectively on the metallic microstructured surface. Articles formed from this method are also disclosed.
摘要:
A plating method for applying a secondary plating (electroless plating) onto a primary plated film (or a metal film) formed on a substrate for reliably executing the plating reaction at a higher deposition rate without requiring Pd-substitution treatment. The surface potential of the primary plated film is adjusted to be baser than the basest surface potential at which the surface current density of the primary plated film becomes 0 in the electroless plating solution for the secondary plating and, then, the secondary plating is effected. The invention further covers a pH-adjusting agent that is suited for carrying out the electroless plating method, a pretreatment solution for electroless plating that contains a reducing agent and a complexing agent, and an electroless plating bath.
摘要:
The present invention provides a surface-independent surface-modifying multifunctional biocoating and methods of application thereof. The method comprises contacting at least a portion of a substrate with an alkaline solution comprising a surface-modifying agent (SMA) such as dopamine so as to modify the substrate surface to include at least one reactive moiety. In another version of the invention, a secondary reactive moiety is applied to the SMA-treated substrate to yield a surface-modified substrate having a specific functionality.
摘要:
One subject of the present invention is a non-electrochemical process for radical grafting of a polymer to a solid, organic or inorganic and insulating, electrically conductive or electrically semiconductive substrate, which process comprises - bringing said substrate into contact with the polymer in solution via an immersion-emersion, a contact coating, or a spray coating, and - heat treating the polymer-covered substrate obtained in the preceding step at a temperature between 70°C and 450°C; said polymer not being a polymer based on acrylic acid. The invention also relates to a process for metallizing the solid, organic or inorganic substrate coated by the polymer film, which metallizing may be carried out via a dry or wet route. This process particularly finds an application in the metallization of through vias for the manufacture of semiconductor devices.