The feasibility of the anodic protection of titanium evaporators in Al
2(SO4)3 solution was studied by the measurement of polarization curves
, weight loss, solubility of passive film and AC impedance. The protec
tion parameters and efficiency were determined. In addition, the pract
ical technology of anodic protection was studied by screening referenc
e electrodes and auxiliary cathodes. Throwing power was also measured.
Four rows of tube-type evaporators of titanium have been anodically p
rotected in situ. Field tests lasting more than one year show satisfac
tory results.