Concepedia

Abstract

An electron diffraction study was made on the crystal structure, orientation, and mode of growth of nickel deposits from sulfate‐chloride‐boric acid and chloride‐boric acid baths under various bath conditions. The effect of pH, temperature, concentration, current density, mechanical stirring, etc., and of additions such as hydrogen peroxide, nickel nitrate, and sodium chloride was investigated on polycrystalline substrates. Depending on bath conditions various preferred orientations (one‐degree), mixed or otherwise, were developed and their causes have been discussed in detail. These have been correlated also with the mode of cathodic crystal growth process.