wanhaorefractory

 Y₂O₃ can stabilize ZrO₂, the thermal expansion coefficient of pure monoclinic ZrO₂ is small, but the thermal expansion coefficient is anisotropic; the thermal expansion coefficient of cubic ZrO₂ is related to temperature, the higher the temperature, the greater the thermal expansion coefficient, thermal expansion will generate thermal stress, which will affect the material The thermal shock resistance. At the same time, when Y₂O₃ is corroded by slag, it can form Y₂O₃-CaO-SiO₂ eutectic and MgAl₂O4 spinel. Compared with the Y₂O₃-CaO-SiO₂-Al₂O3 eutectic formed when the magnesia-zirconium refractory product without Y₂O₃ is eroded by slag, its eutectic temperature is higher, and it can consume part of SiO₂, reduce the viscosity of slag, and effectively hinder melting. The continued infiltration of slag improves the slag resistance. prepared MgO-ZrO₂-Y₂O₃ composite material by co-precipitation method and studied its mechanical properties. The results show that the introduction of Y₂O₃ i...