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

• Published in: Journal of iron and steel research, international international, 2010-10, Vol.17 (10), p.75-78
• Main Authors: LIU, Bo, SUN, Jia-lin, TANG, Guang-sheng, LIU, Kai-qi, LI, Lin, LIU, Yong-feng
• Format: Article
• Language: English
• Subjects: Applied and Technical Physics; Carbon; Carbon black; Dipping; Engineering; Iron and steel industry; low-carbon content; Machines; magnesia-carbon composite; Manufacturing; Materials Engineering; Materials Science; Mechanical properties; Metallic Materials; nanometer carbon black; Oxidation resistance; Physical Chemistry; Processes; refractory; Shock resistance; Steels; thermal shock resistance; 低碳钢; 力学性能; 复合材料性能; 抗热震性; 氧化气氛; 纳米碳
• ISSN: 1006-706X; 2210-3988
• DOI: 10.1016/S1006-706X(10)60187-2

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 1100 °C in oxidizing atmosphere, and thermal shock resistance after 5 times dipping in 1600 °C molten steel of the low-carbon composite samples were investigated, compared with a commercial high-carbon MgO-C composite containing carbon of 16%. The results show that the mechanical properties, oxidation resistance and thermal shock resistance 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 reaches the level of the high-carbon samples.