Archeological analogs for the lifetime prediction of the canister for spent nuclear fuel in the deep geological repository: Part II. Evolution of the corrosion rate over time

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F24%3AN0000017" target="_blank" >RIV/46356088:_____/24:N0000017 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985912:_____/25:00587643

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/maco.202414521" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/maco.202414521</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/maco.202414516" target="_blank" >10.1002/maco.202414516</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Archeological analogs for the lifetime prediction of the canister for spent nuclear fuel in the deep geological repository: Part II. Evolution of the corrosion rate over time

Popis výsledku v původním jazyce

This work focuses on archaeological analogues as a way of obtaining long-term data for assessing the lifetime of a spent nuclear fuel canister. An analysis of the environment around the excavated artefacts is presented, followed by geochemical modelling of the likely corrosion products and subsequent comparison with real phases in the corrosion layer estimated by X-ray diffraction. A total of 16 archaeological sites with fine clay soils and the potential for long-term flooding were evaluated. Although the soil pore solution contained high levels of silicates, no such phases with iron in the corrosion products were confirmed. Carbonate corrosion products, typical of bentonite environments, were also not observed. Although oxygen access is very limited in the environments of all sites, even low concentrations shifted the equilibrium of corrosion products formed in favour of (hydroxy)oxides. Despite the similar composition of soil and bentonite pore solutions, even a minimal oxygen content shifts the equilibrium from carbon-based corrosion products to oxo-hydroxides.

Název v anglickém jazyce

Archeological analogs for the lifetime prediction of the canister for spent nuclear fuel in the deep geological repository: Part II. Evolution of the corrosion rate over time

Popis výsledku anglicky

This work focuses on archaeological analogues as a way of obtaining long-term data for assessing the lifetime of a spent nuclear fuel canister. An analysis of the environment around the excavated artefacts is presented, followed by geochemical modelling of the likely corrosion products and subsequent comparison with real phases in the corrosion layer estimated by X-ray diffraction. A total of 16 archaeological sites with fine clay soils and the potential for long-term flooding were evaluated. Although the soil pore solution contained high levels of silicates, no such phases with iron in the corrosion products were confirmed. Carbonate corrosion products, typical of bentonite environments, were also not observed. Although oxygen access is very limited in the environments of all sites, even low concentrations shifted the equilibrium of corrosion products formed in favour of (hydroxy)oxides. Despite the similar composition of soil and bentonite pore solutions, even a minimal oxygen content shifts the equilibrium from carbon-based corrosion products to oxo-hydroxides.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/TK01010040" target="_blank" >TK01010040: Archeologické analogy pro verifikaci modelů životnosti kontejneru pro hlubinná úložiště radioaktivního odpadu</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Materials and corrosion - Werkstoffe un korrosion

ISSN

0947-5117

e-ISSN

1521-4176

Svazek periodika

76

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

155-163

Kód UT WoS článku

001271131100001

EID výsledku v databázi Scopus

2-s2.0-85198498795