摘要:
The present invention relates to novel processes for metallization of dielectric substrate surfaces applying organosilane compositions followed by oxidative treatment. The method results in metal plated surfaces exhibiting high adhesion between the substrate and the plated metal while at the same time leaves the smooth substrate surface intact.
摘要:
The present invention is related to a holding device for a substrate holder for a vertical galvanic metal, preferably copper, deposition on a substrate to be treated comprising at least a first device element, at least a second device element and at least a third device element, wherein the first device element is a first fastening means for fastening the second and third device element; the second device element and the third device element are supporting elements, which are arranged in such a way that there is defined an at least semi-enclosed receiving hole for a substrate holder by the respective spacing between said second device element and said third device element, preferably defined by the respective spacing between first, second and third device element; wherein said second device element further comprise at least a first recess and said third device element further comprise at least a second recess for an accurate positioning and fixation of a substrate holder. The invention is further related to a substrate holder for being inserted in such a holding device.
摘要:
The present invention relates to a method for electrodepositing a thick copper layer onto an electrically conductive, sintered layer. The thick copper layer has a high adhesion strength, is poor in defects and internal stress, and has high electrical and thermal conductivity. The thick copper layer on the sintered layer is suited for printed circuit boards for high power electronic applications.
摘要:
The present invention relates to a method for copper electroplating in the manufacture of printed circuit boards, IC substrates and the like. Said method is suitable for a combined conformal through-hole (5) filling and filling of blind micro vias (6). The method utilizes a metal redox system and pulse reverse plating and involves a multilayer laminate comprising a dielectric core layer (1) having an inner copper layer (3), a dielectric outer layer (2) and an outer copper layer (4). A first copper layer (7) is formed by flash plating then copper (8) is electroplated by pulse reverse plating.
摘要:
A method is provided for metallization of substrates providing a high adhesion of the deposited metal to the substrate material and thereby forming a durable bond. The method applies novel adhesion promoting agents comprising nanometer-sized oxide particles prior to metallization. The particles are selected from one or more of silica, alumina, titania, zirconia, tin oxide and zinc oxide particles which have at least one attachment group bearing a functional chemical group suitable for binding to the substrate.
摘要:
The present invention relates to a process for corrosion protection of an iron-containing substrate wherein a first zinc-nickel alloy layer, a second zinc-nickel alloy layer and a black passivate layer are deposited onto the substrate. The nickel concentration in the second zinc-nickel alloy layer is higher than the nickel concentration in the first zinc-nickel alloy layer. The substrate surface obtained is homogenously black with an appealing decorative appearance and both resistance against white rust and red rust are improved.
摘要:
The present invention relates to an aqueous composition for and a process for etching copper and copper alloys applying said aqueous composition. The aqueous composition comprises a source for Fe 3+ ions, at least one acid, at least one triazole or tetrazole derivative, and at least one etching additive selected from N-alkylated iminodipropionic acid, salts thereof, modified polyglycol ethers and quaternary ureylene polymers. The aqueous composition is particularly useful for making of fine structures in the manufacture of printed circuit boards, IC substrates and the like.
摘要:
The invention relates to methods and plating baths for electrodepositing a dark chromium layer on a workpiece. The trivalent chromium electroplating baths comprise sulphur compounds and the methods for electrodepositing a dark chromium layer employ these trivalent chromium electroplating baths. The dark chromium deposits and workpieces carrying dark chromium deposits are suited for application for decorative purposes.