Abstract
Repassivation behavior of Super 13Cr martensitic stainless steel was investigated using a one-dimensional artificial pit electrode in deaerated NaCl solutions at 85 °C. Critical potentials for pit repassivation (Ecrit) were measured by downward potential scans. Ecrit and the final current density (if) at the end of the scan can be correlated to the pit repassivation, showing that repassivation is more probable with smaller if and higher Ecrit. Pit repassivation at a constant potential was correlated with if and average current density (iavg). A combination of lower if and iavg suggests a higher probability for pit repassivation.
| Original language | English |
|---|---|
| Article number | 108754 |
| Journal | Corrosion Science |
| Volume | 173 |
| DOIs | |
| State | Published - Aug 15 2020 |
| Externally published | Yes |
Funding
This work was supported by a gift from DNVGL . Postdoctoral education investment funded by Oak Ridge National Laboratory (ORNL) was used to complete this manuscript. Analysis of the data was performed as part of the Center for Performance and Design of Nuclear Waste Forms and Containers, an Energy Frontier Research Center funded by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences under Award # DE-SC0016584. This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. DOE. The U.S. government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This work was supported by a gift from DNVGL. Postdoctoral education investment funded by Oak Ridge National Laboratory (ORNL) was used to complete this manuscript. Analysis of the data was performed as part of the Center for Performance and Design of Nuclear Waste Forms and Containers, an Energy Frontier Research Center funded by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences under Award # DE-SC0016584. This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. DOE. The U.S. government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
Keywords
- Localized corrosion
- One dimensional pit
- Passivity breakdown
- Repassivation
- Stainless steel