Rohm & Haas Electronic Materials LLC

Rohm and Haas Electronics LLC

Margit Clauss

Wan Zhang-Beglinger

Adolphe Foyet

Michael P Toben

Yi Qin

Felix J Schwager

Edit Szocs

Julia Woertink

Jonas Guebey

Jonathan D Prange

Pedro O Lopez Montesinos

Wan Zhang-Berlinger

Reto Buchs

Edit Szöcs

Cyanide-free acidic silver electroplating compositions include one or more acids or salts of tellurium and may be used to electroplate matte silver deposits on metals, such as nickel, copper or copper alloys. Matte silver metal may be electroplated at conventional plating rates or at high plating rates, such as in reel-to-reel and jet plating. The cyanide-free acidic silver electroplating compositions may be used to electroplate matte silver in the manufacture of electronic components such as electrical connectors, finishing layers for metallic substrates, optical devices and decorative applications.

Cyanide-free acidic matte silver electroplating compositions and methods

Acid bismuth electroplating baths are stable and have high current efficiency over the life of the baths. The bismuth baths are easy to control because of the reduced number of bath components.

Bismuth electroplating baths and methods of electroplating bismuth on a substrate

Silver and tin alloy electroplating baths include complexing agents which enable the electroplating of either silver rich or tin rich alloys. The silver and tin alloy electroplating baths are substantially free of lead. They may be used to electroplate silver and tin alloys in the manufacture of electronic components such as electrical connectors, finishing layers for metallic substrates, decorative applications and solder bumps.

Electroplating baths of silver and tin alloys

A high speed method of depositing palladium and palladium alloys is disclosed. The high speed method uses an aqueous, ammonia-based bath which has reduced free ammonia in the bath. The high speed method may be used to deposit palladium and palladium alloy coatings on various substrates such as electrical devices and jewelry.

High speed method for plating palladium and palladium alloys

A silver electroplating solution is used to electroplate a mirror bright silver layer on a nickel or nickel alloy substrate. The silver electroplating solution is cyanide-free and environmentally friendly.

Method of electroplating silver strike over nickel

A thin film of tin is plated directly on nickel coating a metal substrate followed by plating silver directly on the thin film of tin. The silver has good adhesion to the substrate even at high temperatures.

High temperature resistant silver coated substrates

A cyanide-free silver electroplating solution may be used to electroplate mirror bright silver layers at high current density ranges and at high temperatures such as in reel-to-reel electroplating. The cyanide-free silver electroplating solution is environmentally friendly.

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Kriens, Switzerland

Margit Clauss