SEDL / STP / STP1194-EB / STP24895S

Applications of Electrochemical Potentiokinetic Reactivation Test to On-Site Measurements on Stainless Steels

Verneau, M
Corrosion engineer, Materials Research Center, Creusot-Loire Industrie, Le Creusot,

Charles, J
Stainless steels product manager, Creusot-Loire Industrie, Le Creusot,

Dupoiron, F
Head, Materials Research Center, Creusot-Loire Industrie, Le Creusot,

Pages: 15    Published: Jan 1994

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Abstract

The aim of the paper is to present some applications of the Electrochemical Potentiokinetic Reactivation (EPR) technique to the characterization of the corrosion resistance of stainless steels apparatus.

In particular, the use of the technique to the detection of chromium depletions on insufficiently pickled austenitic steels is explained. The application of the method to determine the degree of sensitization of duplex stainless steels by intermetallic phase precipitations is also discussed.

Then, the paper presents the possibility of use of the EPR test for on-site measurements, with a portable equipment.