STRESS CORROSION CRACKING AND CORROSION BEHAVIOR OF TITANIUM IN METHANOL SOLUTIONS - EFFECT OF METAL IONS IN SOLUTION

Separate additions to solution of Pd, Au, Fe (ferric), and Cu (cupric) ions, in quantities ranging from 0. 01 to 1000 ppm, caused substantial increases in both susceptibility to SCC and intergranular corrosion, without resulting passivity reported for aqueous hydrochloric acid solutions; not metal films were detected with ferric or cupric ions in solution, additional cathodic reaction in these cases probably being reduction of these ions to their lower oxidation states; observations are discussed in terms of mechanism of SCC.