Mittireddi, Ravi TejaRavi TejaMittireddiMakani, Nisha HiralalNisha HiralalMakaniSingh, Ranjan KumarRanjan KumarSinghBanerjee, RupakRupakBanerjeePanda, EmilaEmilaPanda2025-08-312025-08-312024-02-0110.1016/j.corsci.2023.1117742-s2.0-85183715920http://repository.iitgn.ac.in/handle/IITG2025/29041This paper addresses the heating/cooling-induced formation, dissociation and phase separation during thermal oxidation of Sm<inf>2</inf>(Co, Fe, Cu, Zr)<inf>17</inf> alloys at 298.15 K-973 K, using real-time and room-temperature measurements. Whereas, Fe<inf>3</inf>O<inf>4</inf> forms at 673 K ≤ T ≤ 773 K, it transforms to CuFe<inf>2</inf>O<inf>4</inf> at 823 K ≤ T ≤ 973 K because of the incorporation of Cu⁺² into the octahedral Fe⁺² lattice sites in Fe<inf>3</inf>O<inf>4</inf>. CuFe<inf>2</inf>O<inf>4</inf> dissociates instantaneously upon cooling, and separates into layered structure of Cu-oxides at oxide-surface and Fe<inf>3</inf>O<inf>4</inf> underneath. A detailed discussion on possible reaction pathways leading to these phenomena during the heating/cooling cycle is presented here.falseCuFe2O4 | In-situ GIXRD | Oxidation | Phase dissociation | Phase transformation | Sm2(Co,Fe,Cu,Zr)17ArticleFebruary 20244111774arJournal5WOS:001165801600001