Effects of Nanometer Carbon Black on Performance of Low-Carbon MgO-C Composites  

作　　者：LIU Bo SUN Jia-lin TANG Guang-sheng LIU Kai-qi LI Lin LIU Yong-feng 

机构地区：[1]University of Science and Technology Beijing, Beijing 100083, China [2]Central Iron and Steel Research Institute, Beijing 100081, China

出　　处：《Journal of Iron and Steel Research International》2010年第10期75-78,共4页

基　　金：Item Sponsored by National Natural Science Foundation of China(50572032)

摘　　要：The low-carbon magnesia-carbon （MgO-C） composites containing 3% （mass fraction, the same below） carbon were prepared by adding various types of carbon black （CB）. The mechanical properties, oxidation resistance at 1 100 ℃ in oxidizing atmosphere, and thermal shock resistance after 5 times dipping in 1 600 ℃molten steel of the low-carbon composite samples were investigated, compared with a commercial high-carbon MgO-C composite contai- ning carbon of 16 %. The results show that the mechanical properties, oxidation resistance and thermal shock resist- ance of the low-carbon samples are improved with the decrease of CB particle size. Thermal shock resistance of the low-carbon sample containing nanometer CB N220 is obviously better than that of other low-carbon samples, and rea- ches the level of the high-carbon samples.The low-carbon magnesia-carbon （MgO-C） composites containing 3% （mass fraction, the same below） carbon were prepared by adding various types of carbon black （CB）. The mechanical properties, oxidation resistance at 1 100 ℃ in oxidizing atmosphere, and thermal shock resistance after 5 times dipping in 1 600 ℃molten steel of the low-carbon composite samples were investigated, compared with a commercial high-carbon MgO-C composite contai- ning carbon of 16 %. The results show that the mechanical properties, oxidation resistance and thermal shock resist- ance of the low-carbon samples are improved with the decrease of CB particle size. Thermal shock resistance of the low-carbon sample containing nanometer CB N220 is obviously better than that of other low-carbon samples, and rea- ches the level of the high-carbon samples.

关 键 词：magnesia-carbon composite low-carbon content nanometer carbon black thermal shock resistance re- fractory 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业] TG142.31[一般工业技术—材料科学与工程]