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RESEARCH PRODUCT

A photoelectrochemical characterization of passive films on stainless steels

Agatino Di PaolaCarmelo SunseriFrancesco Di Quarto

subject

PhotocurrentMaterials scienceGeneral Chemical EngineeringMetallurgyGeneral Materials ScienceGeneral ChemistryApplied potentialCharacterization (materials science)Corrosion

description

Abstract Passive films on stainless steels for sea water service have been studied by means of photocurrent measurements. Four experimental ELI (Extra Low Interstitital) ferritic stainless steels (types 25Cr-4Ni-4Mo) and a commercial superaustenitic stainless steel (type 20Cr-18Ni-6Mo-N) have been investigated. Differences in the photoelectrochemical behaviour have been attributed to the different nature of the passive films grown on ferritic or superaustenitic stainless steels. An interpretation is provided to explain the complex dependence of the photocurrent transients on the applied potential. Manuscript received 27 February 1986; in amended form 19 June 1986.

https://doi.org/10.1016/0010-938x(86)90084-3