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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
SEM images of sample Al-2-1 corroded by slag S (1350 °C, 10 h); (a,c) hot-face zone of the impregnated area, (b,d) high magnification of ho-face zone (slag/refractory interface).