| Title | The measurement of ultra low uniform corrosion rates |
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| Author | Senior, N A; Martino, T ; Diomidis, N; Gaggiano, R; Binns, J; Keech, P |
| Source | Corrosion Science vol. 176, 2020 p. 1-11, https://doi.org/10.1016/j.corsci.2020.108913 |
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| Year | 2020 |
| Alt Series | Natural Resources Canada, Contribution Series 20200386 |
| Publisher | Elsevier Ltd. |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf; html |
| Subjects | Science and Technology; Health and Safety; nuclear energy; nuclear waste disposal; radioactive waste; metals; corrosion; hydrogen; modelling; Storage; Methodology; monitoring; Materials
technology |
| Illustrations | schematic diagrams; plots; time series |
| Released | 2020 08 01 |
| Abstract | The safe long-term disposal of radioactive waste arising primarily from power generation is a complex proposition. Safety assessment modelling typically incorporates up to one million years, which is an
engineering requirement without precedent. In order to perform this modelling, it is imperative that the behaviour of the materials comprising the repository are well understood over the timescales in question. This article describes a method
developed for studying the behaviour of metals under anoxic conditions via the corrosion reaction end product, hydrogen. At its simplest, test cells are left for periods of time, up to several months, to accumulate hydrogen. This gas is then expelled
from the cell and analysed using a hydrogen sensor. As such, the method is limited to characterising gas generation and consequently only uniform corrosion, but does permit direct monitoring of corrosion rates as low as 0.01 nm/year, which is
necessary in order to accurately monitor the very low long-term corrosion rates expected in a deep geological repository. |
| GEOSCAN ID | 327174 |
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