CeO_2对低氟连铸保护渣转折温度和结晶性能的影响  

Effect of CeO_2 on Break Temperature and Crystallization Properties of Mold Fluxes with Low Fluoride Content

作　　者：何生平[1] 徐楚韶[1] 王谦[1] 解丹[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《中国稀土学报》2007年第3期377-380,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金和宝钢联合资助项目(50474023)

摘　　要：研究了低氟条件下,稀土氧化物CeO2对连铸保护渣转折温度和结晶性能的影响,同时与常规的高氟连铸保护渣性能进行了对比分析。结果表明:在碱度R较低的条件下,随着CeO2含量的升高,转折温度和结晶温度均有先下降后上升的趋势;在碱度较高的情况下,CeO2的加入将明显提高连铸保护渣的转折温度和凝固温度。Effect of CeO2 crystallization properties on break temperature and mold fluxes, and the cornparison of properties between low-fluoride and highfluoride content mold fluxes were studied. The results were as follows： When basicity was low, as the content of CeO2 increased, break temperature and crystallization temperature first reduced and then increased;when basicity （R）was high, adding CeO2 could remarkedly increase break temperature and solidifying temperature. The experimental results were helpful for developing non-fluoride and low-fluoride content mold fluxes of continuous casting and deeply understanding influence of rare earth oxide on properties of mold fluxes.

关 键 词：CEO2 连铸保护渣 转折温度 结晶性能 稀土 

分 类 号：TG146.45[一般工业技术—材料科学与工程]