ÖNORM EN ISO 12732 - Korrosion von Metallen und Legierungen - Verfahren für die elektrochemische potentiodynamische Reaktivierungsmessung mit dem Double-loop-Verfahren (Cihal-Verfahren) (ISO 12732:2006)
Ausgabedatum
2008-08-01
Norm-beschreibende Schlagwörter
Normenart
STANDARD
Norm-Nummer
ÖNORM EN ISO 12732
Norm-Titel, deutsch
Korrosion von Metallen und Legierungen - Verfahren für die elektrochemische potentiodynamische Reaktivierungsmessung mit dem Double-loop-Verfahren (Cihal-Verfahren) (ISO 12732:2006)
Vorgänger-Norm
ÖNORM EN ISO 12732 (2007 12 01)
Norm-Titel, englisch
Corrosion of metals and alloys - Electrochemical potentiokinetic reactivation measurement using the double loop method (based on Cihal's method) (ISO 12732:2006)
Norm-Titel, französisch
Corrosion des métaux et alliages - Mesurage de la réactivation électrochimique potentiocinétique par la méthode de la double boucle (dérivée de la méthode de Cihal) (ISO 12732:2006)
gültig ab
2008-08-01
internat. Übereinstimmung
EN ISO 12732 (2008 04) , ident ISO 12732 (2006) , ident
This standard specifies the method for measuring the degree of sensitization (DOS) in stainless steel and nickel-based alloys using the Double Loop Electrochemical Potentiokinetic Reactivation (DL-EPR) test (based on Čihals method). The method may be used for the quantitative assessment of deleterious thermal effects resulting in the formation of alloy-element-depleted zones at grain boundaries or in the matrix. However, attention should be paid when testing heat-affected weld zones, due to possible non-uniform distribution of sensitized zones along the fusion lines. The results of the test can be used as an index to identify the potential susceptibility of stainless steel and nickel-based alloys to intergranular corrosion, pitting corrosion, and intergranular-stress corrosion cracking, but prediction of these corrosion modes depends on complementary specific testing. This standard describes the general methodology and, in Annex C, gives examples of suitable test exposure conditions for specific al