Abstract
The present paper investigates the effect of chloride and
sulfate additions on corrosion of low-alloyed steel in a
cladding flaw of a nuclear reactor pressure vessel using
in-situ electrochemical impedance spectroscopy coupled to
ex-situ characterization of the oxides by surface
analytical techniques. Impedance data are interpreted by
the mixed-conduction model for oxide films to yield
estimates for the main kinetic and transport parameters
of the corrosion process. It can be concluded that the
effect of chloride/sulfate transients on low-alloyed
steel oxides is moderate, concerns mostly the processes
at the inner layer/coolant interface and is to a certain
extent reversible.
| Original language | English |
|---|---|
| Pages (from-to) | 757-770 |
| Journal | Electrochimica Acta |
| Volume | 173 |
| DOIs | |
| Publication status | Published - 2015 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- low-alloyed steel
- high-tempereature water
- chloride and sulfate additions
- impedance spectroscopy
- kinetic model