Abstract
The passivation and breakdown behavior of 304 stainless steel in propylene carbonate (PC) or dimethoxyethane (DME) mixtures with water and containing 0.5 M LiAsF 6 were studied. The air-formed film of 304 stainless steel provides a good passive film that resists breakdown. No pitting was observed in either PCH 2O-0.5M LiAsF 6 mixtures or mixed DMEH 2O-0.5M LiAsF 6 solutions if the polarizations were conducted below the oxidation potential [1800mV ( sce)] of the hexafluoroarsenate electrolyte. It is apparent that even small amounts of water were sufficient to stabilize the passive film on stainless steel through a probable oxide-oxyhydroxide formation. Pitting of the 304 stainless steel was observed in both mixed organic-water solutions at potentials above the oxidation potential of AsF 6 − because of the lack of passivating mechanisms such as salt film formation, electropolymerization, or oxide-oxyhydroxide formation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
