Corrosion Studies of Candidate Materials for European HPLWR
| Autor: | Aki Toivonen, Radek Novotny, Liisa Heikinheimo, Sami Penttilä |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Scanning electron microscope 020209 energy Alloy Energy-dispersive X-ray spectroscopy Oxide 02 engineering and technology engineering.material SCWR Corrosion chemistry.chemical_compound 0203 mechanical engineering 0202 electrical engineering electronic engineering information engineering Austenitic stainless steel Austenite candidate alloys Metallurgy Condensed Matter Physics Supercritical fluid 020303 mechanical engineering & transports Nuclear Energy and Engineering chemistry engineering general corrosion |
| Zdroj: | Penttilä, S, Toivonen, A, Heikinheimo, L & Novotny, R 2010, ' Corrosion Studies of Candidate Materials for European HPLWR ', Nuclear Technology, vol. 170, no. 1, pp. 261-271 . https://doi.org/10.13182/NT10-A9463 Scopus-Elsevier Penttilä, S, Toivonen, A, Heikinheimo, L & Novotny, R 2008, Corrosion Studies of Candidate Materials for European HPLWR . in Proceedings : International Conference on Advances in Nuclear Power Plants, ICAPP 2008 . American Nuclear Society (ANS), pp. 2163-2174, 2008 International Congress on Advances in Nuclear Power Plants, ICAPP 2008, Anaheim, California, United States, 8/06/08 . |
| ISSN: | 1943-7471 0029-5450 |
| DOI: | 10.13182/nt10-a9463 |
| Popis: | The High Performance Light Water Reactor (HPLWR) design is one of the concepts chosen for Generation IV reactors; however, the material requirements for HPLWR offer challenges because of the extreme operating temperatures and pressures. Consequently, general corrosion rates were studied in water at 300 to 650°C at supercritical pressure using weight gain measurements. Oxide thicknesses were determined from cross-section samples. The compositions of the oxide layers were analyzed using scanning electron microscopy in conjuction with energy dispersive spectroscopy. The surface layers of selected samples were analyzed also by X-ray diffraction. The test matrix included ten materials from four alloy classes: ferritic/martensitic steels, oxide dispersion strengthened (ODS) steels, austenitic stainless steels, and nickel-base alloys. A high oxidation resistance was seen in Ni-base alloy 625, austenitic stainless steels with high Cr content (>18 wt% Cr), and an ODS steel containing 20% Cr at all applied test temperatures (300 to 650°C). The oxidation rates of austenitic stainless steels with lower Cr content, 15 to 18%, increase considerably at temperatures >500°C. The oxidation rates of 9% Cr ODS steels were moderate or high at all temperatures. Ferritic/martensitic steels showed high oxidation rates at all temperatures. |
| Databáze: | OpenAIRE |
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