1 State Key Laboratory of Advanced Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, Henan, China 2 Institute of Research of Iron and Steel, Shasteel, Zhangjiagang 215625, Jiangsu, China 3 School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
Abstract：BN–ZrO2 ceramics with different additives such as SiC, Al2O3 and MgAl2O4 were fabricated by hot pressing sintering process to study sintering properties and corrosion resistance by the rotary immersion molten steel test. The results showed that SiC, Al2O3 and MgAl2O4 can improve the sintering properties of BN–ZrO2 ceramics; especially, the introduction of SiC can significantly improve the hardness of the material; thus, the above compounds will help to improve the wear resistance of BN–ZrO2 ceramics. The exposed oxide layer is in contact with molten steel and forms liquid phase after BN oxidation and B2O3 volatilization, additives can significantly affect the properties of liquid phase, and m-ZrO2 grains are sintered and grown by dissolution–precipitation mechanism by liquid phase. Consequently, Al2O3 and MgAl2O4 are more conducive to the formation of working layer with solid skeleton, which determines the corrosion resistance of BN–ZrO2 ceramics.
Fan Qian,Hua-long Li,Wen-gang Yang, et al. Corrosion resistance of BN–ZrO2 ceramics with different additives by molten steel[J]. Journal of Iron and Steel Research International, 2022, 29(7): 1101-1109.