Electrochemical potentiodynamic reactivation: Development and applications of the EPR test

Vladimír Číhal, Rudolf Štefec, Tetsuo Shoji, Yutaka Watanabe, Vivenakand Kain

Research output: Contribution to journalConference articlepeer-review

18 Citations (Scopus)


The EPR test, designed to examine of the susceptibility to nonuniform, primarily intergranular corrosion, ranks among the more successful testing technique developments relating to stainless steels and alloys. One of its numerous advantages is that it lends itself to non-destructive, on-site examination. EPR enjoyed wide expansion over the years since first conceived by Číhal in 1969. Recent EPR measurements tend to focus on (1) double and/or single loop EPR as a modern technique used to establish the resistance of stainless steels and alloys to intergranular corrosion; (2) detecting integranular corrosion (IGC) and intergranular stress corrosion cracking (IGSCC) susceptibility in alloy steels and nickel alloys for nuclear engineering applications; and (3) studies of grain boundary precipitation and other minute local changes to alloy composition and structure.

Original languageEnglish
Pages (from-to)855-864
Number of pages10
JournalKey Engineering Materials
Issue numberII
Publication statusPublished - 2004
EventAdvances in Fracture and Failure Prevention: Proceedings of the Fifth International Conference on Fracture and Strength of Solids (FEOFS2003): Second International Conference on Physics and Chemistry of Fracture and Failure Prevention (2nd ICPCF) - Sendai, Japan
Duration: 2003 Oct 202003 Oct 22


  • EPR test
  • Intergranular corrosion
  • Nuclear applications
  • Phase precipitation
  • Sensitization
  • Stainless steels & alloys
  • Stress corrosion cracking


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