硅微粉结合碳化硅材料抗冰晶石侵蚀性能的研究  

Study on the performance of cryolite corrosion resistance properties of microsilica with SiC

作　　者：马小娥[1] 王敏丽[1] 李有国 李国松 

机构地区：[1]河南理工大学材料学院,河南焦作454003 [2]沁阳沁澳铝业公司,河南沁阳454550 [3]焦作出入境检验检疫局,河南焦作473036

出　　处：《轻金属》2008年第4期57-59,共3页Light Metals

基　　金：河南省科技攻关项目(0424250044)

摘　　要：对于铝电解槽用碳化硅材料而言,抗熔融冰晶石电解液侵蚀性是影响其使用寿命的决定性因素。本文选用硅微粉作为结合剂,CaO-MnO2作为混合矿化剂在1350℃烧结碳化硅材料,并研究此材料抗冰晶石以及冰晶石和萤石的混合物(冰晶石:萤石=1:1)侵蚀性能。结果表明:硅微粉和复合矿化剂的加入使得烧结温度大大降低;此种材料抗冰晶石和萤石混合物侵蚀的能力好于抗冰晶石侵蚀能力。Anti - corrosive molten cryolite is the decisive factor to,affect the service life of aluminum cell with silicon carbide materials. The selection of microsilica as a bonding agent, CaO - MnO2 as mixed mineralized agent under 13500C SiC is studied in the paper. The corrosive performances of cryolite and the mixtures of cryolite and fluorite（cryolite： fluorite = 1 ： 1）are studied as well. It shows that the adding of microsilica and compound mineralized agent greatly reduces the temperature of sintering, whose performances are much better than that of cryolite.

关 键 词：硅微粉结合SiC 冰晶石 抗侵蚀性 

分 类 号：TF821[冶金工程—有色金属冶金]