THE ACTION OF INORGANIC COLLOIDS ON ELECTRODEPOSITION OF NICKEL

The electrodeposition of nickel sulphate bath on copper plates in the presence of Prussian blue, silver, ferric oxide and arsenious sulphide sols has been studied. A dull and very rough deposit is obtained in the presence of arsenious sulphide. while the presence of other sols yields a comparatively lustrous and smooth deposit. The nature and concentration of the sol seem to affect the nature and amount of deposit.