Development, Characterization, and Testing of a SiC-Based Material for Flow Channel Inserts in High-Temperature DCLL Blankets
| Autor: | Carmen García-Rosales, Carlota Soto, Marta Malo Huertac, Ernests Platacis, Teresa Hernández, J. Echeberria, Faina Muktepavela, Andrejs Shisko |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Nuclear and High Energy Physics Materials science Fabrication electrical conductivity Blanket Condensed Matter Physics 01 natural sciences Temperature measurement 010305 fluids & plasmas Corrosion chemistry.chemical_compound Thermal conductivity dual-coolant lead-lithium (DCLL) blanket Flexural strength chemistry Corrosion by PbLi 0103 physical sciences Thermal Silicon carbide NATURAL SCIENCES:Physics [Research Subject Categories] flow channel insert (FCI) thermal conductivity Composite material porous SiC |
| Zdroj: | IEEE Transactions on Plasma Science |
| ISSN: | 0093-3813 |
| DOI: | 10.1109/TPS.2018.2809571 |
| Popis: | This work has been carried out within the framework of the EUROfusion Consortium. The views and opinions expressed herein do not necessarily reflect those of the European Commission. Flow channel inserts (FCIs) are the key elements in the high-temperature dual-coolant lead-lithium blanket, since in this concept the flowing PbLi reaches temperatures near 700 °C and FCIs should provide the necessary thermal and electrical insulations to assure a safe blanket performance. In this paper, the use of a SiC-sandwich material for FCIs consisting of a porous SiC core covered by a dense chemical vapor deposition-SiC layer is studied. A fabrication procedure for porous SiC is proposed and the resulting materials are characterized in terms of thermal and electrical conductivities (the latter before and after being subjected to ionizing radiation) and flexural strength. SiC materials with a wide range of porosities are produced; in addition, preliminary results using an alternative route based on the gel-casting technique are also presented, including the fabrication of hollow samples to be part of future lab-scale FCI prototypes. Finally, to study the corrosion resistance of the material in hot PbLi, corrosion tests under static PbLi at 700 °C and under flowing PbLi at 10 cm/s and 550 °C, with and without a 1.8-2T magnetic field, were performed to materials coated with a 200-400- μm -thick dense SiC layer, obtaining promising results. Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART² |
| Databáze: | OpenAIRE |
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