STRESS-CORROSION CRACKING AND CREVICE CORROSION IN PASSIVABLE ALLOYS

S.C.C. of mild steel in passivating nitrate solutions and crevice corrosion of passive austenitic stainless steels in acid solutions have been electrochemically investigated. Besides the known interconnection between localized attack and s.c.c. of passivable alloys in regard to the initiating circumstances, certain strong evidence has resulted from the experimental analysis of some strict geometrical and electrochemical analogies between the mechanisms of these two forms of corrosion. In this connection a theoretical treatment of a possible common mechanism is outlined on an idealized model in terms of active-passive cells. © 1969.