硅灰石对ZrO_2-CaO-SiO_2体系抗钢水侵蚀性的影响

Effect of wollastonite on corrosion resistance to molten steel of ZrO_2-CaO-SiO_2 system

以锆酸钙、α-Al2O3微粉和硅灰石为原料制备ZrO2-CaO-SiO2体系的浸入式水口材料,通过改变硅灰石的含量(其质量分数分别为0、2%、4%、6%和8%),利用静态坩埚法研究了该体系材料的抗钢水侵蚀性能。结果表明:ZrO2-CaO-SiO2体系浸入式水口材料对钢水的抗侵蚀能力较强,且硅灰石含量对其抗侵蚀能力的影响不大;但其抗钢水渗透能力随硅灰石含量的增大而逐渐增强,当硅灰石质量分数为6%时,材料的抗钢水渗透能力最强。

ZrO2-CaO-SiO2 system submerged entry nozzles were prepared using calcium zirconate, α-Al2O3 micropowder and wollastonite as starting materials. The corrosion resistance to molten steel of ZrO2-CaO- SiO2 system material was studied by changing wollastone content （w（wollastone） is 0,2% ,4% ,6%, and 8%, respectively） and using static crucible method. The results show that the ZrO2-CaO-SiO2 system materials have good corrosion resistance to molten steel,and the wollastone content has little effect on corrosion resistance to molten steel. However, with wollastone content increasing, the penetration resistance to molten steel of ZrO2-CaO-SiO2 system materials is enhanced gradually, and when wollastone content is 6% ,the ZrOa-CaO-SiO2 system materials perform the best penetration resistance to molten steel.