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Electrodeposition of Cobalt-Phosphorous Alloys

IP.com Disclosure Number: IPCOM000097004D
Original Publication Date: 1962-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Koretzky, H: AUTHOR

Abstract

In this method of depositing cobalt-phosphorous alloys, the electrolyte used consists of a solution of cobalt chloride, CoC1(2) * 6H(2)O, in the range 50-400 g/l and sodium hypophosphite, NaH(2)PO(2) * H(2)O, 16-32 g/l at a pH of about 4.0 - 4.8.

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Electrodeposition of Cobalt-Phosphorous Alloys

In this method of depositing cobalt-phosphorous alloys, the electrolyte used consists of a solution of cobalt chloride, CoC1(2) * 6H(2)O, in the range 50-400 g/l and sodium hypophosphite, NaH(2)PO(2) * H(2)O, 16-32 g/l at a pH of about
4.0 - 4.8.

The plating is carried out at room temperature and a current density of 200- 2200 amps per sq. ft. This results in magnetic coatings having a coercive force in the range of 260-360 oersteds and a remanence value, Br, of 7.0 kilogauss, at 1000 oersteds drive fields.

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