Dynamic and static corrosion of chromium-alumina refractory in simulated nuclear waste glass

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F25%3A00641786" target="_blank" >RIV/67985891:_____/25:00641786 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/25:43933322

Výsledek na webu

<a href="https://doi.org/10.1016/j.ceramint.2025.10.255" target="_blank" >https://doi.org/10.1016/j.ceramint.2025.10.255</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2025.10.255" target="_blank" >10.1016/j.ceramint.2025.10.255</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dynamic and static corrosion of chromium-alumina refractory in simulated nuclear waste glass

Popis výsledku v původním jazyce

Monofrax® K-3, a chromium–alumina refractory, is widely used in nuclear waste glass melters due to its high durability. However, aggressive vitrification conditions still lead to corrosion that limits melter lifespan. This study investigates two key corrosion modes, subsurface and melt-line corrosion, under static and dynamic conditions, using a custom setup enabling precise control of melt velocity and temperature. Experimental results, interpreted using diffusion-limited dissolution models, show that (i) subsurface corrosion increases by approximately 10 % per mm/s increase in melt velocity, while melt-line corrosion remains virtually unaffected, (ii) corrosion rate dependence on temperature is inversely proportional to melt viscosity, and (iii) glass composition affects both corrosion modes similarly, based on Cr2O3, Al2O3, and alkali contents. The experimental data also allowed the determination of diffusion coefficients of major dissolving species, which were found to be consistent between the melt-line and subsurface corrosion models, indicating their suitability for future CFD studies.

Název v anglickém jazyce

Dynamic and static corrosion of chromium-alumina refractory in simulated nuclear waste glass

Popis výsledku anglicky

Monofrax® K-3, a chromium–alumina refractory, is widely used in nuclear waste glass melters due to its high durability. However, aggressive vitrification conditions still lead to corrosion that limits melter lifespan. This study investigates two key corrosion modes, subsurface and melt-line corrosion, under static and dynamic conditions, using a custom setup enabling precise control of melt velocity and temperature. Experimental results, interpreted using diffusion-limited dissolution models, show that (i) subsurface corrosion increases by approximately 10 % per mm/s increase in melt velocity, while melt-line corrosion remains virtually unaffected, (ii) corrosion rate dependence on temperature is inversely proportional to melt viscosity, and (iii) glass composition affects both corrosion modes similarly, based on Cr2O3, Al2O3, and alkali contents. The experimental data also allowed the determination of diffusion coefficients of major dissolving species, which were found to be consistent between the melt-line and subsurface corrosion models, indicating their suitability for future CFD studies.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/LUAUS23062" target="_blank" >LUAUS23062: Experimentální a matematická analýza vlastností primární sklotvorné taveniny, vývoje plynů, a jejich vztahu k množství vyvinuté primární pěny.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Ceramics International

ISSN

0272-8842

e-ISSN

1873-3956

Svazek periodika

51

Číslo periodika v rámci svazku

29

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

60583-60591

Kód UT WoS článku

001625888600011

EID výsledku v databázi Scopus

2-s2.0-105020419436