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Browse Prior Art Database

Electroplating Bath

IP.com Disclosure Number: IPCOM000097911D
Original Publication Date: 1961-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Tsu, I: AUTHOR [+2]

Abstract

This D.C. electroplating bath produces a cobalt-nickel film of superior magnetic properties, free of pin holes.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Electroplating Bath

This D.C. electroplating bath produces a cobalt-nickel film of superior magnetic properties, free of pin holes.

The electrolyte is composed of 5 g/l Co/++/, 15 g/l Ni/++/, 60 g/l NH(2)SO(3)/- /, 6 g/l Cl/-/. Cobalt and chloride ions are supplied by CoCl(2)* 6H(2)0, chloride ions adjusted with HCl. An index of pH of 6.5 is desirable and is adjusted by potassium hydroxide. An optimum value of current density is 15 amps/sq.ft. with a plating potential of 1.7 volts. The magnetic properties of a film of 0.06 mils thickness are: Hc = 600 oersteds, Br=7000 gauss, Br/Bs = 0.8 to 0.9.

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