抄録
The leveling in nickel plating was studied with a Hull Cell. In dull nickel plating from Watts bath, the leveling was found to be affected by “Geometrical leveling”. In bright or semibright nickel plating from a high temperature bath with a highly concentrated leveler, a good leveling was obtained at high current densities, but the leveling at low current densities was little made. Therefore, the concentration range of the levellres and bath temperature must be carefully chosen for practical bright and semibright nickel plating baths; In bright and semibright nickel plating from a low concentration nickl bath with a leveler of low concentration such as a bath of the composition NiSO4 7H2O 75g/l, NiCl2 6H2O 110g/l, H3BO3 30g/l, the leveling was found to be made more than that from the Watts bath.
