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EUROFER-97在模拟水冷锂铅增殖包层条件下的氧化行为。

Oxidation behaviour of EUROFER-97 under simulated water-cooled lithium lead breeder blanket conditions.

作者信息

Volpe Liberato, Capone Dora, Andresen Peter, Prestat Eric, Scenini Fabio

机构信息

Materials Division, United Kingdom Atomic Energy Authority, Culham Campus, Abingdon, OX14 3DB UK.

Department of Materials, Henry Royce Institute, The University of Manchester Oxford Road, Manchester, M13 9PL UK.

出版信息

Npj Mater Degrad. 2025;9(1):50. doi: 10.1038/s41529-025-00600-y. Epub 2025 May 13.

DOI:10.1038/s41529-025-00600-y
PMID:40376497
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12074980/
Abstract

The effect of water chemistry, surface condition, alkalizing agent (LiOH . KOH), and Zn addition was investigated at 300 °C on the oxidation behaviour of reduced activation ferritic martensitic (RAF/M) EUROFER-97. EUROFER-97 is the proposed material for the water-cooled lithium lead breeder blanket (WCLL-BB) section of DEMO, but its behaviour under elevated temperature hydrogenated water has never been investigated. Advanced material characterization showed that, despite its relatively low chromium content, EUROFER-97 exhibits high corrosion resistance. This is because EUROFER-97 is protected by an inner polycrystalline FeCrO layer, formed regardless of the water chemistry and surface preparation investigated. The outer non-protective oxide consists of FeO crystallites, which were refined when KOH was used. When injected, Zn was observed only on top of the outer crystallites without diffusing into the inner oxide layer. These findings demonstrate the excellent oxidation behaviour of EUROFER-97 in the proposed water chemistry, highlighting its suitability for the WCLL-BB section.

摘要

在300°C下，研究了水化学、表面条件、碱化剂（LiOH·KOH）和添加锌对降低活化能铁素体马氏体（RAF/M）EUROFER-97钢氧化行为的影响。EUROFER-97钢是示范快堆（DEMO）水冷锂铅增殖包层（WCLL-BB）部分提议使用的材料，但其在高温氢化水环境下的行为从未被研究过。先进的材料表征表明，尽管EUROFER-97钢的铬含量相对较低，但它具有很高的耐腐蚀性。这是因为EUROFER-97钢受到内层多晶FeCrO层的保护，无论所研究的水化学和表面处理如何，都会形成该层。外层非保护性氧化物由FeO微晶组成，当使用KOH时，这些微晶会细化。注入锌后，仅在外层微晶顶部观察到锌，而没有扩散到内层氧化物层中。这些发现证明了EUROFER-97钢在所提议的水化学环境中具有优异的氧化行为，突出了其适用于WCLL-BB部分的特性。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e3a/12074980/31b9fa151b61/41529_2025_600_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e3a/12074980/d86804ae825a/41529_2025_600_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e3a/12074980/ba8801387ebd/41529_2025_600_Fig10_HTML.jpg
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本文引用的文献

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