Nanocrystalline diamond protects Zr cladding surface against oxygen and hydrogen uptake: Nuclear fuel durability enhancement
| Autor: | Peng Xu, Stanislav Cichoň, Martin Steinbrück, Vladimír Cháb, Jonna M. Partezana, Jan Tomastik, J. Lorincik, Radim Ctvrtlik, Jana Prehradná, Irena Kratochvílová, Petr Ashcheulov, Radek Škoda, Andrew Taylor, Petr Sajdl, František Fendrych, Jaromír Kopeček, Jan Škarohlíd, Jan Macák |
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| Rok vydání: | 2017 |
| Předmět: |
Cladding (metalworking)
Materials science Hydrogen Science chemistry.chemical_element 02 engineering and technology 01 natural sciences Oxygen Article law.invention law 0103 physical sciences Engineering & allied operations Burnup 010302 applied physics Zirconium Multidisciplinary Nuclear fuel Nuclear reactor 021001 nanoscience & nanotechnology chemistry Chemical engineering Medicine ddc:620 0210 nano-technology Carbon |
| Zdroj: | Scientific Reports Scientific Reports, Vol 7, Iss 1, Pp 1-14 (2017) Scientific reports, 7 (1), Art.Nr.: 6469 |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-017-06923-4 |
| Popis: | In this work, we demonstrate and describe an effective method of protecting zirconium fuel cladding against oxygen and hydrogen uptake at both accident and working temperatures in water-cooled nuclear reactor environments. Zr alloy samples were coated with nanocrystalline diamond (NCD) layers of different thicknesses, grown in a microwave plasma chemical vapor deposition apparatus. In addition to showing that such an NCD layer prevents the Zr alloy from directly interacting with water, we show that carbon released from the NCD film enters the underlying Zr material and changes its properties, such that uptake of oxygen and hydrogen is significantly decreased. After 100–170 days of exposure to hot water at 360 °C, the oxidation of the NCD-coated Zr plates was typically decreased by 40%. Protective NCD layers may prolong the lifetime of nuclear cladding and consequently enhance nuclear fuel burnup. NCD may also serve as a passive element for nuclear safety. NCD-coated ZIRLO claddings have been selected as a candidate for Accident Tolerant Fuel in commercially operated reactors in 2020. |
| Databáze: | OpenAIRE |
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