Evaluation of the EPR technique for measuring sensitization in type 304 stainless steel

R. F A Jargelius*, S. Hertzman, E. Symniotis, Hannu Hänninen, P. Aaltonen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)

Abstract

The electrochemical potentiodynamic reactivation (EPR) technique has been used to measure the degree of sensitization in type 304 (UNS(1) S30400) stainless steel with 0.052% C. In the first part of the work, the dependence of EPR results on testing temperature is quantified, thus permitting the conversion of field testing results to laboratory conditions. Automatic image analysis has additionally been used to characterize the intergranular corrosive attack produced by EPR testing. Results correlate well to the electrochemical measurements and also form the basis for an improved equation for the evaluation of the degree of sensitization. In the second part, the correction for testing temperature differencess is applied to the results of a European round robin on EPR testing.

Original languageEnglish
Pages (from-to)429-435
Number of pages7
JournalCorrosion
Volume47
Issue number6
Publication statusPublished - Jun 1991
MoE publication typeA1 Journal article-refereed

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