Morphology of titanium diboride obtained by electrochemical synthesis frommolten chloro-fluoride melt

Titanium diboride has been synthesised from NaCl-KCl-NaF-K2TiF6-KBF4 molten system at 700 degrees C on W cathode by DC and PCR techniques in the wide range of current densities. From comparison of Equilibrium Electrochemical Synthesis (EES) diagrams and linear voltammograms the conclusion was made, that first a thin layer of W2B will be formed, with further growth of TiB2. Deposits were analysed by X-ray diffractometry, SEM and GDOES. These techn iques confirmed the validity of theoretical predictions. Finer structure ha s been obtained by the PCR technique compared to the DC technique. Titanium and boron atoms were found to diffuse deep into the tungsten substrate wit h a constant ratio of 1:2.