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7315 |
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Friday, May 06, 2022, Hall -2.32/33 11:20 AM Renewable Power Generation |
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Protective Mo and Fe coatings by CS and RF-ICP for PbLi coolant environments in generation IV fission reactors |
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Jan Cizek* / Czech Academy of Sciences, Czech Republic Martina Pazderova / Research Centre Rez, Czech Republic Jakub Klecka/ Institute of Plasma Physics of the Czech Academy of Sciences, Czech Republic Lukas Babka/ Faculty of Mechanical Engineering, Czech Technical University, Prague, Czech Republic, Czech Republic Jan Kondas/ Impact Innovations GmbH., Germany Reeti Singh/ Impact Innovations GmbH., Germany |
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The introduction of generation IV nuclear fission reactors and fusion systems foresees the potential to use liquid metal-based cooling media. Owing to their favorable chemical-physical characteristics, the most promising coolant candidates are heavy liquid metals such as lead-lithium eutectic (PbLi). The usage of PbLi offers several advantages, such as its very high thermal conductivity that can be employed for rapid and efficient heat transfer. However, using such medium triggers the need to prevent degradation (e.g., corrosion) of the structural materials. A potential way could be deposition of protective, long-term stability coatings onto the surfaces. In our study, we have employed CS and RF-ICP technologies to deposit Mo and Fe coatings onto stainless steel demonstration workpieces, manifesting suitability of the two methods for the task. Following a successful optimization, both coating types were deposited onto structural material coupons (ferritic-type 9% Cr Eurofer steel and its ODS variant) and tested in the PbLi environment for extended times, where the coatings showed a promising resistance to the corrosive medium. |