Neubert, LukasBellé, Matheus RobertoYehorov, AntonMospan, AnhelinaStadtmüller, Till M. J.Sridhar, SeetharamanAneziris, Christos G.Volkova, Olena2026-05-292026-05-292026-05-29https://opara.zih.tu-dresden.de/handle/123456789/2421In the present study a comprehensive investigation of the interactions between different molten high-silicon electrical steels (3 to 6 mass-% silicon) in aluminum killed condition with conventional and recycled MgO–C refractories is conducted. Immersion tests are carried out in accordance with the standards for testing and assessment of corrosion of refractories by liquids (DIN CEN/TS 15 418). Various mechanisms are defined and described which determine the corrosion of the refractory material in addition to infiltration. Scanning electron microscopy including energy dispersive X-ray spectroscopy (EDX analysis) is conducted to identify wear reactions, material transfers and reaction products at the contact zones and in the infiltration layers. The theoretically possible infiltration length is calculated and the limited applicability of the equations known from the literature is discussed. The formation of calcium sulfides and on other crucible reactions that take place are considered. These provide information and at the same time they influence the interactions between refractory materials and liquid steel.4::43