ROLE OF CORROSION INHIBITING PIGMENTS ON THE ELECTROCHEMICOL KINETICSOF A COPPER-CONTAINING ALUMINUM-ALLOY

The electrochemical polarization behavior of the copper-containing Al 2024-T3 alloy in deaerated 0.01 M NaCl saturated with a number of soli d inhibitors demonstrates that one of the compounds examined, barium m etaborate, exhibits an inhibiting power in excess of that of zinc chro mate. Electrochemical polarization of a synthetic theta-phase CuAl2 in termetallic in aerated 0.01 M NaCl with and without the presence of th e barium metaborate and zinc chromate inhibitors has also been examine d.