Electroless nickel plating of a steel base

Details Electroless nickel plating of a steel base Electroless nickel plating of a steel base

C - Chemistry, Metallurgy

09

K

6/5

C09K 3/00 (2006.01) C23C 18/34 (2006.01) C25B 11/04 (2006.01)

Patent

CA 1074952

ABSTRACT OF THE DISCLOSURE : A cathode for a chlor-alkali cell is made by providing a steel cathode with a dense, non-porous electroless coating of nickel. Such a coating having a thickness of 1 to 15 microns is produced by immersing the steel cathode in a bath of suitable temperature, the bath containing a suitable nickel salt, water, a complexing agent and a reducing agent. The cathode so coated hat a lower hydrogen overvoltage (by about 0.16 volt) than an uncoated steel cathode, and the effect persists through many months of use The invention thus makes it possible to achieve considerable savings of power in the electrolysis of brine in a chlor-alkali cell.

271885

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