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Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft Wissenschaftliche Berichte FZKA 7224 Quantification of the Degradation of Steels Exposed to Liquid Lead-Bismuth Eutectic
| Content Provider | Semantic Scholar |
|---|---|
| Author | Schroer, Carsten F. E. Voss, Z. Novotný, Josef Konys, Juergen |
| Copyright Year | 2006 |
| Abstract | Metallographic and gravimetric methods of measuring the degradation of steels are introduced and compared, with emphasis on the quantification of oxidation in molten lead-bismuth eutectic (LBE). In future applications of LBE or other molten lead alloys, additions of oxygen should prevent the dissolution of steel constituents in the liquid heavy metal. Therefore, also the amount of steel constituents transferred between the steel (including the oxide scale formed on the surface) and the LBE has to be assessed, in order to evaluate the efficiency of oxygen additions with respect to preventing dissolution of the steel. For testing the methods of quantification, specimens of martensitic steel T91 were exposed for 1500 h to stagnant, oxygen-saturated LBE at 550°C, whereby, applying both metallographic and gravimetric measurements, the recession of the cross-section of sound material deviated by ± 3 μm for a mean value of 11 μm. Although the transfer of steel constituents between the solid phases and the LBE is negligible under the considered exposure conditions, the investigation shows that a gravimetric analysis is most promising for quantifying such a mass transfer. For laboratory experiments on the behaviour of steels in oxygen-containing LBE, it is suggested to make provisions for both metallographic and gravimetric measurements, since both types of methods have specific benefits in the characterisation of the oxidation process. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://publikationen.bibliothek.kit.edu/270064708/3814813 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
