Effects of Al-Si Addition on Thermomechanical Properties of Low Carbon MgO-C Materials

摘要：

　　The effects of Al-Si addition on hot modulus of rupture (HMOR),thermal shock resistance (TSR),phase composition and microstructure of low carbon MgO-C materials have been investigated.The results show that with the addition of Al-Si (1)HMOR increases dramatically,e.g.at 1400℃,it increases from 2 MPa to 20-29 MPa; (2)Residual strength ratio after thermal shock (ΔT=1200℃,air cooling 3 cycles) increases from 44% to 73-77%.Al reacts with C and N2 to form Al4C3 and AlN; Si reacts with C to form SiC.Ultimately amount of in situ formed nonoxides increases appreciably with temperature rise and at 1300-1400℃ they are well interlaced in periclase skeleton structure which would be beneficial to thermomechanical properties.

关键词： Low carbon MgO-C material Al-Si addition Thermomechanical properties

作者: REN Zhen GE Tiezhu ZHONG Xiangchong

作者单位: High Temperature Ceramics Institute, Zhengzhou University, Zhengzhou, China

会议类型: 国际会议

会议名称: The 6th International Symposium on Refractories (第六届国际耐火材料会议)

会议地点: 郑州

会议语种:英文

页码: 187-190

在线出版日期: 2012-10-18（万方平台首次上网日期，不代表论文的发表时间）