| Abstract: | The electrolytic reduction of Ti(III) species in LiF+NaF+KF eutectic on iron and nickel, studied using voltammetric techniques, proceeds reversibly in the 600–700°C temperature range. No interaction occurs between the iron electrode and the titanium coating, whereas the solubility of titanium in nickel has been proved. Chronoamperometric measurements at constant potentials more positive than the Ti(III)/Ti equilibrium potential indicate that the electrochemical incorporation of titanium in nickel is controlled by intermetallic diffusion.Coatings of pure titanium 20 to 30 μm thick were produced on iron at 700°C and on nickel at 600 and 700°C; they were homogeneous and well-crystallized. X-ray fluorescence analysis showed that the pure titanium coating is joined to the nickel supporting metal by a multilayer zone consisting of Ti2Ni, TiNi and TiNi3 definite compounds. |
