Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Deposition Of Electroless And Electroplated Layers From The Same Bath On High Resistance Substrates

IP.com Disclosure Number: IPCOM000095445D
Original Publication Date: 1964-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Judge, JS: AUTHOR

Abstract

Individual layers of electroless and electroplated cobalt, nickel, iron and their alloys, with phosphorous, are deposited in a single plating bath on a moving, continuous, high resistance film. The plating baths here used for the electroplating of cobalt, nickel, iron and their alloys are not essentially different in composition from the chemical reduction type plating baths for depositing the same metals. The adjustment of temperature, pH, and the bath composition allows the individual layer formation of electroplated and electroless plated coatings.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 59% of the total text.

Page 1 of 2

Deposition Of Electroless And Electroplated Layers From The Same Bath On High Resistance Substrates

Individual layers of electroless and electroplated cobalt, nickel, iron and their alloys, with phosphorous, are deposited in a single plating bath on a moving, continuous, high resistance film. The plating baths here used for the electroplating of cobalt, nickel, iron and their alloys are not essentially different in composition from the chemical reduction type plating baths for depositing the same metals. The adjustment of temperature, pH, and the bath composition allows the individual layer formation of electroplated and electroless plated coatings.

The deposition is accomplished by first presensitizing a continuous film, composed of a material such as polyethylene terephthalate, with stannous chloride and palladium chloride treating solutions to coat the continuous film with a thin layer of palladium.

The presensitized, high resistance film 1 is passed into plating bath 2. A typical bath composition and important physical conditions are:
Cobalt Chloride (CoCl(2) * 6H(2)O) 65 grams/liter Nickel Chloride (NiCl(2) * 6H(2)O) 20 grams/liter Sodium Hypophosphite (NaH(2)PO(2) * H(2)O) 50 grams/liter Sodium Tartrate 100 grams/liter Ammonium Chloride (NH(4)Cl) 50 grams/liter pH 8 to 7
Temperature 65 degrees C. Film 1 passes over electrically insulated idler roller 3 and out of the bath after passing in close proximity to anode 4. Plated film 7 then passes over cathodic con...