Electrochemical deposition of titanium and aluminium from equimolar AlCl3+NaCl melt

Electrodeposition of Al-Ti based materials is an attractive process offering many advantages over more conventional processing methods. A number of articles on aluminium-titanium intermetallics electrodeposited from electrolyte made of 2AlCb+NaCl or from ionic liquid (IL) AlCb- 1-ethyl-3-methylimidazolium chloride have been reported. We are reporting on Al-Ti electrodeposition from equimolar chloroaluminate molten salt containing up to 0.97 at.% Ti ions added into the electrolyte by potentiostatic dissolution of a titanium plate at 200°C. Titanium dissolution and titanium and aluminium depositions were conducted by linear sweep voltammetry and chronoamperometry. The working electrodes used were titanium and glassy carbon (GC). The voltammograms obtained in the electrolyte without in advance introduced Ti ions indicated titanium and alwrunium deposition and anodic responses characteristics of Al, Ti and Alffi alloys dissolutions. The voltammograms on Ti from the electrolyte with Ti ions reiterated the said results exhibiting higher current densities under the same conditions. The voltammograms on glassy carbon electrode done in equimolar chloroaluminate molten salt with Ti ions present confirmed the general picture already seen with Ti working electrode under the same conditions, Al and Ti deposition