Corrosion behavior of ferritic steel improved by coating in liquid lead

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F25%3AN0000116" target="_blank" >RIV/26722445:_____/25:N0000116 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.confer.cz/metal/2025/5128-corrosion-behavior-of-the-ferritic-steel-improved-by-coating-in-liquid-lead" target="_blank" >https://www.confer.cz/metal/2025/5128-corrosion-behavior-of-the-ferritic-steel-improved-by-coating-in-liquid-lead</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2025.5128" target="_blank" >10.37904/metal.2025.5128</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Corrosion behavior of ferritic steel improved by coating in liquid lead

Popis výsledku v původním jazyce

Among the advanced reactor designs of the fourth generation of nuclear reactors, the Lead-cooled Fast Reactor (LFR) stands out as one of six distinct types. The corrosion damage of the steels, it is caused by liquid metal acting on the structural material, which is considered a significant obstacle in the development of the fast reactors concept. The corrosion resistance and chemical compatibility with environment of 9Cr-1Mo, ferritic alloy steel (T91), in condition of the static liquid lead with 10-6 wt.% oxygen at 520 ºC are analysed in this study. The specimens were exposed for 3500 hours. The specimens tested were the reference T91 and T91 with the coating on base Al and Ti was applied to the second specimen. The coating applied by physical vapor deposition were used for corrosion resistance improvement. The formed oxide scale of reference T91 consists of an outer layer with a Fe-Cr spinel structure and an inner internal oxidation zone (IOZ). Corrosion damage was characterized using electron microscopy techniques, which identified networks of solution-based attack (SBA) intrusion beneath liquid lead wetted surfaces. The damage to the coating depends on their chemical composition and structure of the coating. However, in general, the application of the coating increased the resistance of the surface to corrosion damage.

Název v anglickém jazyce

Corrosion behavior of ferritic steel improved by coating in liquid lead

Popis výsledku anglicky

Among the advanced reactor designs of the fourth generation of nuclear reactors, the Lead-cooled Fast Reactor (LFR) stands out as one of six distinct types. The corrosion damage of the steels, it is caused by liquid metal acting on the structural material, which is considered a significant obstacle in the development of the fast reactors concept. The corrosion resistance and chemical compatibility with environment of 9Cr-1Mo, ferritic alloy steel (T91), in condition of the static liquid lead with 10-6 wt.% oxygen at 520 ºC are analysed in this study. The specimens were exposed for 3500 hours. The specimens tested were the reference T91 and T91 with the coating on base Al and Ti was applied to the second specimen. The coating applied by physical vapor deposition were used for corrosion resistance improvement. The formed oxide scale of reference T91 consists of an outer layer with a Fe-Cr spinel structure and an inner internal oxidation zone (IOZ). Corrosion damage was characterized using electron microscopy techniques, which identified networks of solution-based attack (SBA) intrusion beneath liquid lead wetted surfaces. The damage to the coating depends on their chemical composition and structure of the coating. However, in general, the application of the coating increased the resistance of the surface to corrosion damage.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/TK04030082" target="_blank" >TK04030082: Pretty Fast Flow</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings 34th International Conference on Metallurgy and Materials

ISBN

978-80-88365-27-3

ISSN

2694-9296

e-ISSN

—

Počet stran výsledku

6

Strana od-do

351-356

Název nakladatele

—

Místo vydání

—

Místo konání akce

Praha

Datum konání akce

21. 5. 2025

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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