Electrochemical and corrosion behavior of a 304 stainless-steel-based metal alloy wasteform in dilute aqueous environments

► We investigated the corrosion behavior of a metal alloy in six reference solutions. ► Majority of rhenium used as a technetium surrogate contained within a Fe2Mo phase. ► This prototype alloy exhibited generally passive behavior in all environments. ► Passivity breakdown events can occur and lead to localized corrosion.