ELECTROCOATING FROM MOLTEN-SALTS

Electrolytic deposition processes from molten salt baths, i.e. metalliding and electroplating, for coating metal or alloy substrates are described. An outline of the general experimental techniques employed in molten salts and the influence of various factors such as impurities, cation valency, nature of the solvent, stability of complex ions, temperature, current density, kinetics, and additives, on the electrolytic processes are discussed. A review of the current status of electrodeposited coatings from molten salts, with special reference to diffusion coatings on metal and alloy surfaces, is presented. The available physical, chemical, and mechanical properties of the coatings thus formed and their applications are summarized. Some suggestions are made to show the directions in which further research in this field is necessary. © 1979 Chapman and Hall Ltd.