NICKEL ELECTRODEPOSITION IN MIXTURES OF DIMETHYLFORMAMIDE AND WATER.

Abstract

Mixing dimethylformamide with nickel acetate or nickel sulfate solution buffered with boric acid reduced cathode efficiency and increased the hardness of the nickel deposits obtained at 1. 5 A/dm**2. The increase in hardness was greater for deposits from the acetate bath, which had a higher pH. These deposits probably contained a greater proportion of colloidal hydroxides or basic salts, accounting for their greater hardness.