Determination of the polarization resistance from impedance measurements | Zendy

Mansfeld Florian | Zendy; Kendig M. W. | Zendy

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Determination of the polarization resistance from impedance measurements

Author(s) -

Mansfeld Florian,

Kendig M. W.

Publication year - 1983

Publication title -

materials and corrosion

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.487

H-Index - 55

eISSN - 1521-4176

pISSN - 0947-5117

DOI - 10.1002/maco.19830340805

Subject(s) - electrical impedance , computation , polarization (electrochemistry) , focused impedance measurement , corrosion , aeration , materials science , analytical chemistry (journal) , computer science , chemistry , algorithm , electrical engineering , engineering , composite material , chromatography , organic chemistry

Four different methods for determining the polarization resistance R p acfrom impedance data are discussed. These methods are suitable for online corrosion monitoring. Their use is illustrated for iron in tapwater and in neutral, aerated Na 2 SO 4 containing various inhibitors. R p ac ‐values obtained with the CIRFIT‐method are compared with R p dcwhich is obtained from a linear sweep through E corr . The integration method has the advantage of computation speed.

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